Quarterly report pursuant to Section 13 or 15(d)

Debt Long-term Debt (Details)

v3.19.1
Debt Long-term Debt (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 25, 2018
Sep. 30, 2018
Long-term Debt [Abstract]      
Long-term debt, gross $ 15,500   $ 15,500
Unamortized discount, including debt issuance costs (79)   (85)
Hedge accounting fair value adjustments (16)   (50)
Interest paid related to commercial paper and long-term debt, net of cash received from the related interest rate swaps 281 $ 317  
Long-term debt, current maturities 0   0
Long-term debt, excluding current maturities 15,405   15,365
Total long-term debt 15,405   15,365
Long-term debt, fair value 15,400   15,100
May 2015 Notes: Floating-rate three-month LIBOR plus 0.55% notes due May 20, 2020 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 250   $ 250
Long-term debt, effective interest rate 3.25%   2.93%
Long-term debt, maturity date May 20, 2020   May 20, 2020
Long-term debt, basis spread on variable rate 0.55%   0.55%
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%.    
May 2015 Notes: Fixed-rate 2.25% notes due May 20, 2020 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,750   $ 1,750
Long-term debt, effective interest rate 3.09%   3.13%
Long-term debt, stated interest rate 2.25%   2.25%
Long-term debt, maturity date May 20, 2020   May 20, 2020
Percentage of debt hedged by interest rate derivatives 43.00%    
May 2015 Notes: Fixed-rate 3.00% notes due May 20, 2022 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 2,000   $ 2,000
Long-term debt, effective interest rate 3.51%   3.73%
Long-term debt, stated interest rate 3.00%   3.00%
Long-term debt, maturity date May 20, 2022   May 20, 2022
Percentage of debt hedged by interest rate derivatives 50.00%    
May 2015 Notes: Fixed-rate 3.45% notes due May 20, 2025 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 2,000   $ 2,000
Long-term debt, effective interest rate 3.46%   3.46%
Long-term debt, stated interest rate 3.45%   3.45%
Long-term debt, maturity date May 20, 2025   May 20, 2025
May 2015 Notes: Fixed-rate 4.65% notes due May 20, 2035 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,000   $ 1,000
Long-term debt, effective interest rate 4.73%   4.73%
Long-term debt, stated interest rate 4.65%   4.65%
Long-term debt, maturity date May 20, 2035   May 20, 2035
May 2015 Notes: Fixed-rate 4.80% notes due May 20, 2045 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,500   $ 1,500
Long-term debt, effective interest rate 4.72%   4.72%
Long-term debt, stated interest rate 4.80%   4.80%
Long-term debt, maturity date May 20, 2045   May 20, 2045
May 2017 Notes: Floating-rate three-month LIBOR plus 0.73% notes due January 30, 2023 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 500   $ 500
Long-term debt, effective interest rate 3.55%   3.14%
Long-term debt, maturity date Jan. 30, 2023   Jan. 30, 2023
Long-term debt, basis spread on variable rate 0.73%   0.73%
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%.    
May 2017 Notes: Fixed-rate 2.60% notes due January 30, 2023 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,500   $ 1,500
Long-term debt, effective interest rate 2.70%   2.70%
Long-term debt, stated interest rate 2.60%   2.60%
Long-term debt, maturity date Jan. 30, 2023   Jan. 30, 2023
May 2017 Notes: Fixed-rate 2.90% notes due May 20, 2024 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,500   $ 1,500
Long-term debt, effective interest rate 3.01%   3.01%
Long-term debt, stated interest rate 2.90%   2.90%
Long-term debt, maturity date May 20, 2024   May 20, 2024
May 2017 Notes: Fixed-rate 3.25% notes due May 20, 2027 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 2,000   $ 2,000
Long-term debt, effective interest rate 3.46%   3.46%
Long-term debt, stated interest rate 3.25%   3.25%
Long-term debt, maturity date May 20, 2027   May 20, 2027
May 2017 Notes: Fixed-rate 4.30% notes due May 20, 2047 [Member]      
Long-term Debt [Abstract]      
Long-term debt, principal amount $ 1,500   $ 1,500
Long-term debt, effective interest rate 4.47%   4.47%
Long-term debt, stated interest rate 4.30%   4.30%
Long-term debt, maturity date May 20, 2047   May 20, 2047
Interest Rate Swap [Member]      
Long-term Debt [Abstract]      
Gross notional amount of derivatives $ 1,800