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Employee contribution matched in percent.

+ References

No definition available.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 30

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20028-108363

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-Publisher FASB

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-Topic 710

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-Section 25

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 50

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Employee Benefit Plans, Share Based Compensation by Share Based Payment Award Types (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	$ 65.0	$ 49.0
Employee Benefit Textuals [Abstract]
Employee Contribution Matched in Percent	25.00%
Matching Contributions to Plan	6.6	5.1
Deferred Compensation Liability	11.9		9.3
Stock Options [Member]
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	17.7	19.7
Employee Benefit Textuals [Abstract]
Unrecognized Compensation Cost Related to Unvested Stock Options - Adjusted for Forfeitures	98.4
Weighted Average Period that Unrecognized Compensation Cost Will be Recognized (years)	2.6
RSU's and PSA's
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	41.6	23.4
Employee Benefit Textuals [Abstract]
Unrecognized Compensation Cost Related to Unvested Stock Options - Adjusted for Forfeitures	353.7
Weighted Average Period that Unrecognized Compensation Cost Will be Recognized (years)	2.4
Assumed Restricted Stock Units [Member]
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	0.2	0
Employee Stock Purchase Plan [Member]
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	5.5	4.4
Other Acquisition Related Compensation [Member]
Share-based Compensation Expense by Award Type
Share-Based Compensation Expense, Total	$ 0	$ 1.5