Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of income (loss) before provision for (benefit from) income taxes
United States									$ (390,009)	$ 256,816	$ 343,515
Foreign									(586,108)	(269,197)	(283,070)
Income (loss) before provision for (benefit from) income taxes	(340,253)	(129,413)	(63,511)	(442,940)	(80,772)	(5,112)	(14,405)	87,908	(976,117)	(12,381)	60,445
Current taxes:
United States									(11,420)	2,057	22,275
Foreign									1,084	(1,865)	(561)
State									2,136	1,902	8,655
Total current taxes									(8,200)	2,094	30,369
Deferred taxes:
United States									(131,281)	31,308	19,629
Foreign									(127,587)	0	(32,692)
State									(21,499)	5,352	1,960
Total deferred taxes									(280,367)	36,660	(11,103)
Provision for (benefit from) income taxes	$ (155,704)	$ (751)	$ (1,799)	$ (130,313)	$ (2,696)	$ 21,355	$ 20,063	$ 32	$ (288,567)	$ 38,754	$ 19,266