Other Financial Data (Narrative) (Details) (USD $)	0 Months Ended		1 Months Ended	3 Months Ended		6 Months Ended				6 Months Ended		3 Months Ended	0 Months Ended
	Jan. 30, 2012	Jul. 28, 2011	Feb. 26, 2012	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2012 Noncontrolling Interest [Member]	Jun. 30, 2012 Common Stock Including Additional Paid in Capital [Member]	Jun. 30, 2012 Stock Purchase Agreement, Carl C. Icahn and Affiliates [Member]	Jul. 26, 2012 Additional Authorization Under Share Repurchase Program [Member]	Jul. 26, 2012 Increase in Quarterly Dividend [Member]
Schedule of Investments [Line Items]
Stock options excluded from computation of dilutive shares due to antidilutive nature				6,200,000	8,000,000	6,000,000	8,800,000
Exclusion of assumed vesting securities from computation of earnings per share amount					300,000		200,000
Cash and cash equivalents				$ 1,772,000,000	$ 2,203,000,000	$ 1,772,000,000	$ 2,203,000,000	$ 1,881,000,000	$ 4,208,000,000
Restricted cash and cash equivalents				62,000,000		62,000,000		63,000,000
Depreciation expense				48,000,000	40,000,000	94,000,000	81,000,000
Stockholders' Equity Note [Abstract]
Share repurchase program, maximum amount		2,000,000,000											5,000,000,000
Share repurchase program, additional amount	1,000,000,000												2,000,000,000
Repurchase of common shares				9,100,000		37,100,000						23,739,362
Repurchase of common shares, value				439,000,000		1,800,000,000
Repurchase of common shares, average cost per share			$ 48.30			$ 48.69
Inception-to-date repurchase of common stock, value				2,900,000,000		2,900,000,000
Share repurchase program, available for repurchases													2,100,000,000
Payment of dividends				64,000,000		134,000,000
Dividends declared, per share						$ 0.22								$ 0.26
Noncontrolling Interest Items [Abstract]
Noncontrolling interest acquisition of joint venture, percentage				20.00%
Acquisition of noncontrolling interest from Japanese subsidiary										$ (35,000,000)	$ 20,000,000
Increase in fair value of assets acquired over its previous book value				20.00%