Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended
	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010	Dec. 31, 2010 Vivendi	Dec. 31, 2011 European subsidiary	Dec. 31, 2010 European subsidiary
Commitments and contingencies:
Standby letter of credit	$ 15		$ 22		$ 7	$ 40
Revolving credit facility, maximum borrowing capacity				475
Revolving credit facility, variable rate description	LIBOR
Revolving credit facility, variable rate percent above LIBOR (in hundredths)				1.20%
Revolving credit facility, commitment fee on unused amount (percent in hundredths)				0.42%
Minimum amount of damages sought by plaintiff, including punitive damages, and declaratory relief		36
Bonuses and other compensation allegedly owed, minimum			75
Bonuses and other compensation allegedly owed, maximum	$ 300		$ 125