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Fair Value Disclosures (Financial Assets And Liabilities Measured At Fair Value) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Deferred compensation plan investments	$ 37.3	[1]	$ 41.0	[1]
Derivative financial instruments, Assets	0		0.1
Derivative financial instruments, Liabilities	5.9		16.6
Participant Withdrawals From Deferred Compensation Plan Investments	10.2
Level 1 [Member]
Deferred compensation plan investments	37.3	[1]	41.0	[1]
Derivative financial instruments, Assets	0		0
Derivative financial instruments, Liabilities	0		0
Level 2 [Member]
Deferred compensation plan investments	0	[1]	0	[1]
Derivative financial instruments, Assets	0		0.1
Derivative financial instruments, Liabilities	5.9		16.6
Level 3 [Member]
Deferred compensation plan investments	0	[1]	0	[1]
Derivative financial instruments, Assets	0		0
Derivative financial instruments, Liabilities	$ 0		$ 0
[1] (1) The balance at June 30, 2012 also reflects approximately $10.2 million of participant withdrawals from our deferred compensation plan investment during the six months ended June 30, 2012.

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+ References

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- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

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