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Capital Stock (Details) (USD $)
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3 Months Ended | 12 Months Ended | 1 Months Ended | |||||||||||||||
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Sep. 28, 2014
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Jun. 29, 2014
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Mar. 30, 2014
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Dec. 29, 2013
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Sep. 29, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 30, 2012
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Sep. 30, 2012
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Jun. 24, 2012
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Mar. 25, 2012
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Dec. 25, 2011
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Sep. 28, 2014
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Sep. 29, 2013
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Sep. 30, 2012
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Mar. 04, 2014
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Oct. 16, 2014
Scenario, Forecast [Member]
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Nov. 05, 2014
Scenario, Forecast [Member]
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| Preferred Stock [Abstract] | ||||||||||||||||||
| Shares of preferred stock authorized for issuance | 8,000,000 | 8,000,000 | 8,000,000 | 8,000,000 | ||||||||||||||
| Number of preferred stock series | one or more | one or more | ||||||||||||||||
| Par value of preferred stock authorized for issuance | $ 0.0001 | $ 0.0001 | $ 0.0001 | $ 0.0001 | ||||||||||||||
| Shares of preferred stock designated as series A junior participating preferred stock | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | ||||||||||||||
| Preferred stock, shares outstanding | 0 | 0 | 0 | 0 | ||||||||||||||
| Preferred Share Purchase Rights Agreement [Abstract] | ||||||||||||||||||
| Purchase price of series A junior participating preferred stock | $ 180 | $ 180 | ||||||||||||||||
| Minimum percentage of beneficial ownership by an acquiring person at which rights are exercisable | 20.00% | 20.00% | ||||||||||||||||
| Expiration date of rights | Sep. 25, 2015 | |||||||||||||||||
| Redemption price per right | 0.001 | 0.001 | ||||||||||||||||
| Stock Repurchase Program, Authorized Amount | $ 7,800,000,000 | |||||||||||||||||
| Stock Repurchase Program [Abstract] | ||||||||||||||||||
| Authorized dollar amount for repurchase of common stock under prior stock repurchase program | 5,000,000,000 | 5,000,000,000 | ||||||||||||||||
| Shares repurchased and retired, shares | 60,253,000 | 71,696,000 | 23,893,000 | 8,595,000 | ||||||||||||||
| Shares repurchased and retired, amount, before commissions | 4,549,000,000 | 4,610,000,000 | 1,313,000,000 | 638,000,000 | ||||||||||||||
| Authorized dollar amount remaining available under current stock repurchase program | 5,300,000,000 | 5,300,000,000 | ||||||||||||||||
| Gains (losses) on put options recorded in net investment income | 80,000,000 | |||||||||||||||||
| Dividends [Abstract] | ||||||||||||||||||
| Dividends charged to retained earnings - per share | $ 0.420 | $ 0.420 | $ 0.350 | $ 0.350 | $ 0.350 | $ 0.350 | $ 0.250 | $ 0.250 | $ 0.250 | $ 0.250 | $ 0.215 | $ 0.215 | $ 1.540 | $ 1.200 | $ 0.930 | $ 0.42 | ||
| Dividends charged to retained earnings - total | $ 713,000,000 | $ 718,000,000 | $ 599,000,000 | $ 599,000,000 | $ 604,000,000 | $ 615,000,000 | $ 439,000,000 | $ 435,000,000 | $ 438,000,000 | $ 429,000,000 | $ 377,000,000 | $ 368,000,000 | $ 2,629,000,000 | $ 2,093,000,000 | $ 1,612,000,000 | |||
| Cash dividends, date announced | Oct. 16, 2014 | |||||||||||||||||
| Cash dividends, date payable | Dec. 18, 2014 | |||||||||||||||||
| Cash dividends, date of record | Dec. 01, 2014 | |||||||||||||||||