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Equity Method Investments	3 Months Ended
Equity Method Investments	Mar. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investments There have been no changes in our equity method investments from those disclosed in Note 10 of the Notes to Consolidated Financial Statements in our 2012 Annual Report on Form 10-K.

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

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