Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income before income taxes (benefit):
Domestic	$ 1,398,000,000	$ 1,408,900,000	$ 846,400,000
Foreign	457,100,000	302,300,000	383,500,000
Income before income tax expense and equity in loss of investee, net of tax	1,855,105,000	1,711,214,000	1,229,906,000
Current
Federal	507,900,000	231,700,000	357,700,000
State	35,600,000	15,100,000	19,600,000
Foreign	44,000,000	44,100,000	35,400,000
Total	587,500,000	290,900,000	412,700,000
Deferred
Federal	(133,000,000)	160,900,000	(70,600,000)
State	(13,000,000)	(8,100,000)	(6,600,000)
Foreign	29,100,000	800,000	(4,200,000)
Total	(116,900,000)	153,576,000	(81,410,000)
Total income tax expense	$ 470,554,000	$ 444,528,000	$ 331,333,000