Employee Benefit Plans, Share Based Compensation, Equity Instruments Other Than Options (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended																	12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010 Y		Dec. 31, 2009 Y	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2010 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2009 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member] Minimum [Member] Y	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member] Maximum [Member] Y	Dec. 31, 2011 Performance Share Awards [Member]		Dec. 31, 2010 Performance Share Awards [Member]	Dec. 31, 2009 Performance Share Awards [Member]	Dec. 31, 2011 Restricted Stock Units and Performance Share Awards [Member]	Dec. 31, 2010 Restricted Stock Units and Performance Share Awards [Member]	Dec. 31, 2009 Restricted Stock Units and Performance Share Awards [Member]	Dec. 31, 2008 Restricted Stock Units and Performance Share Awards [Member]	Dec. 31, 2011 Employee Stock Purchase Plan [Member] month
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vest From Grant Date In Years								3	4
Share-Based Compensation Arrangement Vesting Period PSA in Years	3
Restricted Stock Units And Performance Share Awards Activities
Beginning Balance, Number of Shares														19,600,000	14,200,000	9,100,000	6,700,000
Beginning Balance, Weighted Average Grant-Date Fair Value														$ 30.27	$ 25.94	$ 21.76	$ 24.59
Awards Granted, Number of Shares					7,300,000	4,000,000	1,800,000			4,500,000	[1]	3,800,000	2,900,000
Awards Granted, Weighted Average Grant-Date Fair Value					$ 31.75	$ 30.19	$ 17.87			$ 38.64	[1]	$ 29.25	$ 18.05
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Assumed In Period		500,000	[2]
Share Based Compensation Arrangement By ShareBased Payment Award Equity Instruments Other Than Options Assumed In Period Weighted Average Grant Date Fair Value		$ 32.09	[2]
Awards Vested, Number of Shares					(1,700,000)	(1,800,000)	(1,300,000)			(800,000)		(400,000)	(100,000)
Awards Vested, Weighted Average Grant-Date Fair Value					$ 23.26	$ 25.30	$ 21.05			$ 24.76		$ 20.64	$ 26.90
Awards Canceled, Number of Shares					(1,000,000)	(600,000)	(700,000)			(2,900,000)		(400,000)	(200,000)
Awards Canceled, Weighted Average Grant-Date Fair Value					$ 31.57	$ 24.87	$ 24.67			$ 30.72		$ 22.57	$ 19.12
Ending Balance, Number of Shares														19,600,000	14,200,000	9,100,000	6,700,000
Ending Balance, Weighted Average Grant-Date Fair Value														$ 30.27	$ 25.94	$ 21.76	$ 24.59
RSUs and PSAs, Weighted Average Remaining Contractual Term at Period End	1.5	1,700,000.0		1,600,000.0
RSUs and PSAs, Aggregate Intrinsic Value at Period End	$ 400.5	$ 522.9		$ 243.3
Vested and Expected-to-Vest RSUs and PSAs, Number of Shares at Period End	16,700,000
Vested and Expected-to-Vest RSUs and PSAs, Weighted Average Grant-Date Fair Value at Period End	$ 29.97
Vested and Expected-to-Vest RSUs and PSAs, Weighted Average Remaining Contractual Term at Period End	1.3
Vested and Expected-to-Vest RSUs and PSAs, Aggregate Intrinsic Value at Period End	$ 341.0
Aggregate Number Of Shares Subject to PSAs Granted										1,900,000
Minimum shares to be Issued on achievement of performance goals in respect of PSAs										0
Maximum shares to be issued on achievement of performance goals in respect of PSAs										4,500,000
Employee Stock Purchase Plan
Stock based compensation incremental Board approved offering period in months																		6
Stock Issued During Period, Shares, Employee Stock Purchase Plans	2,400,000	2,000,000		3,200,000
Average Price of Common Stock, Per Share	$ 21.53	$ 21.20		$ 12.16
Common Stock, Shares, Issued	526,409,000	525,378,000																6,000,000
Common Stock, Capital Shares Reserved for Future Issuance	105,200,000																	6,000,000

[1] The number of shares subject to PSAs granted represents the aggregate maximum number of shares that may be issued pursuant to the award over its full term. The aggregate number of shares subject to these PSAs that would be issued if performance goals determined by the Compensation Committee are achieved is estimated at 1.9 million shares. Depending on achievement of such performance goals, the range of shares that could be issued under these awards is 0 to 4.5 million shares.

[2] RSUs assumed in connection with the acquisitions of Ankeena and Altor.