Debt (Narrative) (Details) (USD $)	4 Months Ended	9 Months Ended					1 Months Ended		9 Months Ended
	May 28, 2011	Oct. 01, 2011	Oct. 02, 2010	Aug. 27, 2011	Jan. 01, 2011		Mar. 31, 2011 Unsecured Five-Year Credit Agreement [Member]	Mar. 31, 2011 Unsecured Four-Year Credit Agreement [Member]	Oct. 01, 2011 Ten-Year 6.6% U.S. Dollar Notes Due 2011 [Member]	Oct. 01, 2011 Seven-Year 3.25% U.S. Dollar Notes Due 2018 [Member]	May 28, 2011 Seven-Year 3.25% U.S. Dollar Notes Due 2018 [Member]	Mar. 31, 2011 Letter of Credit [Member]	Mar. 31, 2011 U.S. Swingline Loans [Member]	Mar. 31, 2011 European Swingline Loans [Member]	Aug. 27, 2011 Five-Year 5.125% U.S. Dollar Notes Due 2012 [Member]	Aug. 27, 2011 Five-Year 4.25% U.S. Dollar Notes Due 2013 [Member]
Repayment of long-term debt		$ 946,000,000	$ 1,000,000						$ 946,000,000
Debt issued											400,000,000
Debt instrument, payment terms (in years)	seven								ten
Debt instrument, stated interest rate										6.60%	3.25%				5.125%	4.25%
Line of credit facility, maximum borrowing capacity								2,000,000,000				75,000,000	200,000,000	400,000,000
Notional amounts of terminated interest rate swaps				1,500,000,000
Long-term debt		5,300,000,000			4,908,000,000	[1]									750,000,000	750,000,000
Unrealized gain on termination of interest rate fair value hedge				$ (24,000,000)
Prior line of credit facility, expiration date							November 2011

[1] * Condensed from audited financial statements.