Debt Long-term Debt (Details) - USD ($)
$ in Millions |
6 Months Ended |
12 Months Ended |
Mar. 25, 2018 |
Mar. 26, 2017 |
Sep. 24, 2017 |
| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 21,000
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$ 21,000
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| Unamortized discount including debt issuance costs, Net |
(97)
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(106)
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| Hedge accounting fair value adjustments |
(43)
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0
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| Interest paid related to commercial paper and long-term debt, net of cash received from the related interest rate swaps |
317
|
$ 150
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| Debt, long-term and short-term, combined amount |
20,860
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|
20,894
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| Long-term debt, current maturities |
1,499
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|
1,496
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| Long-term debt |
$ 19,361
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|
19,398
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| Special mandatory redemption description, aggregate principal amount and redemption price |
The Company’s 2019 floating-rate notes, 2020 floating-rate notes, 2019 fixed-rate notes and 2020 fixed-rate notes issued in May 2017 for an aggregate principal amount of $4.0 billion are subject to a special mandatory redemption at a price equal to 101% of the aggregate principal amount, plus accrued and unpaid interest to, but excluding, the date of such mandatory redemption.
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| Special mandatory redemption description of terms and dates |
The redemption is required on the first to occur of (i) the termination of the NXP purchase agreement or (ii) if the NXP transaction has not closed, by June 1, 2018.
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| Long-term debt, fair value |
$ 20,500
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21,500
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| Floating-rate three-month LIBOR plus 0.27% notes due May 18, 2018 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 250
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$ 250
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| Long-term debt, effective interest rate |
2.21%
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|
1.65%
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| Long-term debt, maturity date |
May 18, 2018
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May 18, 2018
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| Long-term debt, basis spread on variable rate |
0.27%
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0.27%
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| Long-term debt, interest rate terms |
Variable per annum rate equal to three-month LIBOR as determined on the interest determination date plus 0.27%.
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| Floating-rate three-month LIBOR plus 0.55% notes due May 20, 2020 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 250
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|
$ 250
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| Long-term debt, effective interest rate |
2.49%
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|
1.92%
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| Long-term debt, maturity date |
May 20, 2020
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May 20, 2020
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| Long-term debt, basis spread on variable rate |
0.55%
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0.55%
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| Long-term debt, interest rate terms |
Variable per annum rate equal to three-month LIBOR as determined on the interest determination date plus 0.55%.
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| Fixed-rate 1.40% notes due May 18, 2018 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,250
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|
$ 1,250
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| Long-term debt, effective interest rate |
2.94%
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|
1.93%
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| Long-term debt, stated interest rate |
1.40%
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1.40%
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| Long-term debt, maturity date |
May 18, 2018
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May 18, 2018
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| Fixed-rate 2.25% notes due May 20, 2020 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,750
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|
$ 1,750
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| Long-term debt, effective interest rate |
2.79%
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|
2.20%
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| Long-term debt, stated interest rate |
2.25%
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2.25%
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| Long-term debt, maturity date |
May 20, 2020
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May 20, 2020
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| Percentage of debt hedged by interest rate derivatives |
43.00%
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| Fixed-rate 3.00% notes due May 20, 2022 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 2,000
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|
$ 2,000
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| Long-term debt, effective interest rate |
3.34%
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2.65%
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| Long-term debt, stated interest rate |
3.00%
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3.00%
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| Long-term debt, maturity date |
May 20, 2022
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May 20, 2022
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| Percentage of debt hedged by interest rate derivatives |
50.00%
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| Fixed-rate 3.45% notes due May 20, 2025 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 2,000
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|
$ 2,000
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| Long-term debt, effective interest rate |
3.46%
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3.46%
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| Long-term debt, stated interest rate |
3.45%
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3.45%
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| Long-term debt, maturity date |
May 20, 2025
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May 20, 2025
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| Fixed-rate 4.65% notes due May 20, 2035 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,000
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$ 1,000
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| Long-term debt, effective interest rate |
4.74%
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4.74%
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| Long-term debt, stated interest rate |
4.65%
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4.65%
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| Long-term debt, maturity date |
May 20, 2035
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May 20, 2035
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| Fixed-rate 4.80% notes due May 20, 2045 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,500
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|
$ 1,500
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| Long-term debt, effective interest rate |
4.71%
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4.71%
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| Long-term debt, stated interest rate |
4.80%
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4.80%
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| Long-term debt, maturity date |
May 20, 2045
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May 20, 2045
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| Floating-rate three-month LIBOR plus 0.36% notes due May 20, 2019 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 750
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|
$ 750
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| Long-term debt, effective interest rate |
2.37%
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1.80%
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| Long-term debt, maturity date |
May 20, 2019
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May 20, 2019
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| Long-term debt, basis spread on variable rate |
0.36%
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0.36%
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| Long-term debt, interest rate terms |
Variable per annum rate equal to three-month LIBOR as determined on the interest determination date plus 0.36%.
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| Floating-rate three-month LIBOR plus 0.45% notes due May 20, 2020 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 500
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$ 500
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| Long-term debt, effective interest rate |
2.43%
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1.86%
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| Long-term debt, maturity date |
May 20, 2020
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May 20, 2020
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| Long-term debt, basis spread on variable rate |
0.45%
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0.45%
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| Long-term debt, interest rate terms |
Variable per annum rate equal to three-month LIBOR as determined on the interest determination date plus 0.45%.
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| Floating-rate three-month LIBOR plus 0.73% notes due January 30, 2023 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 500
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|
$ 500
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| Long-term debt, effective interest rate |
2.56%
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2.11%
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| Long-term debt, maturity date |
Jan. 30, 2023
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Jan. 30, 2023
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| Long-term debt, basis spread on variable rate |
0.73%
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0.73%
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| Long-term debt, interest rate terms |
Variable per annum rate equal to three-month LIBOR as determined on the interest determination date plus 0.73%.
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| Fixed-rate 1.85% notes due May 20, 2019 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,250
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$ 1,250
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| Long-term debt, effective interest rate |
2.00%
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|
2.00%
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| Long-term debt, stated interest rate |
1.85%
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1.85%
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| Long-term debt, maturity date |
May 20, 2019
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May 20, 2019
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| Fixed-rate 2.10% notes due May 20, 2020 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,500
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$ 1,500
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| Long-term debt, effective interest rate |
2.19%
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2.19%
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| Long-term debt, stated interest rate |
2.10%
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2.10%
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| Long-term debt, maturity date |
May 20, 2020
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May 20, 2020
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| Fixed-rate 2.60% notes due January 30, 2023 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,500
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|
$ 1,500
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| Long-term debt, effective interest rate |
2.70%
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2.70%
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| Long-term debt, stated interest rate |
2.60%
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2.60%
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| Long-term debt, maturity date |
Jan. 30, 2023
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Jan. 30, 2023
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| Fixed-rate 2.90% notes due May 20, 2024 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,500
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$ 1,500
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| Long-term debt, effective interest rate |
3.01%
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3.01%
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| Long-term debt, stated interest rate |
2.90%
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2.90%
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| Long-term debt, maturity date |
May 20, 2024
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May 20, 2024
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| Fixed-rate 3.25% notes due May 20, 2027 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 2,000
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|
$ 2,000
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| Long-term debt, effective interest rate |
3.46%
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3.46%
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| Long-term debt, stated interest rate |
3.25%
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3.25%
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| Long-term debt, maturity date |
May 20, 2027
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May 20, 2027
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| Fixed-rate 4.30% notes due May 20, 2047 [Member] |
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| Long-term Debt [Abstract] |
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| Long-term debt, principal amount |
$ 1,500
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|
$ 1,500
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| Long-term debt, effective interest rate |
4.47%
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4.47%
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| Long-term debt, stated interest rate |
4.30%
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|
4.30%
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| Long-term debt, maturity date |
May 20, 2047
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|
May 20, 2047
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| Interest Rate Swap [Member] |
|
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| Long-term Debt [Abstract] |
|
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| Gross notional amount of derivatives |
$ 3,000
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