Share-Based Compensation (Grants of Stock Options and RSUs) (Details) (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Stock Options [Member]
Equity awards, granted, in shares	1,459,640	1,550,114
Weighted-average fair value per award, in dollars per share	$ 13.67	$ 14.63
RSUs [Member]
Equity awards, granted, in shares	618,562	520,132
Weighted-average fair value per award, in dollars per share	$ 40.67	$ 47.34

The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(d)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant