Condensed Consolidating Financial Statements (Condensed Consolidating Statements Of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Condensed Consolidating Financial Statements [Line Items]
Net cash provided by operating activities	$ 414	$ 328
Cash flows from investing activities:
Purchases of available-for-sale securities	(65)	(174)
Purchases of held-to-maturity securities	(126)	(78)
Capital expenditures	(90)
Maturities of held-to-maturity securities	3	116
Other, net	17	(80)
Net cash used by investing activities	(264)	(138)
Cash flows from financing activities:
Purchases of common stock	(76)	(314)
Dividends paid	(169)	(157)
Proceeds from option exercises	78	138
Other, net	1	15
Net cash used by financing activities	(166)	(318)
Net cash used by discontinued operations	(1)	(1)
Net decrease in cash and equivalents	(17)	(129)
Cash and equivalents at beginning of period	2,649	2,613
Cash and equivalents at end of period	2,632	2,484
Parent [Member]
Condensed Consolidating Financial Statements [Line Items]
Net cash provided by operating activities	(72)	(71)
Cash flows from investing activities:
Purchases of available-for-sale securities	(45)	(142)
Purchases of held-to-maturity securities	(126)
Maturities of held-to-maturity securities		9
Other, net	23	(50)
Net cash used by investing activities	(148)	(183)
Cash flows from financing activities:
Purchases of common stock	(76)	(314)
Dividends paid	(169)	(157)
Proceeds from option exercises	78	138
Other, net	21	15
Net cash used by financing activities	(146)	(318)
Cash sweep/funding by parent	636	477
Net decrease in cash and equivalents	270	(95)
Cash and equivalents at beginning of period	1,530	1,608
Cash and equivalents at end of period	1,800	1,513
Guarantors On A Combined Basis [Member]
Condensed Consolidating Financial Statements [Line Items]
Net cash provided by operating activities	607	636
Cash flows from investing activities:
Purchases of available-for-sale securities	(20)	(32)
Capital expenditures	(75)
Other, net	20	(17)
Net cash used by investing activities	(75)	(49)
Cash flows from financing activities:
Other, net	(20)
Net cash used by financing activities	(20)
Cash sweep/funding by parent	(512)	(587)
Other Subsidiaries On A Combined Basis [Member]
Condensed Consolidating Financial Statements [Line Items]
Net cash provided by operating activities	(121)	(237)
Cash flows from investing activities:
Capital expenditures	(15)
Maturities of held-to-maturity securities		107
Other, net	(26)	(13)
Net cash used by investing activities	(41)	94
Cash flows from financing activities:
Net cash used by discontinued operations	(1)	(1)
Cash sweep/funding by parent	(124)	110
Net decrease in cash and equivalents	(287)	(34)
Cash and equivalents at beginning of period	1,119	1,005
Cash and equivalents at end of period	$ 832	$ 971