Stockholders' Equity Stockholders' Equity (Stock Repurchase Program) (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended
Jun. 11, 2010	Dec. 31, 2012
Stockholders' Equity and Stock-based Compensation Disclosure [Abstract]
Authorized amount	$ 300,000,000
Amount repurchased		259,000,000.0
Remaining authorized repurchase amount		$ 41,000,000.0

Amount remaining of a stock repurchase plan authorized by an entity's Board of Directors.

No definition available.

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