Discontinued Operations Income (Loss) from Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue									$ 2,598,875	$ 1,717,926	$ 1,740,196
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax									969,685	90,587	(84,972)
Discontinued Operation, Tax Effect of Discontinued Operation									(389,893)	(20,473)	35,794
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	$ 591,144	$ 8,120	$ 42,060	$ (21,375)	$ 1,904	$ 14,814	$ (3,050)	$ 16,290	$ 579,792	$ 70,114	$ (49,178)