Condensed Consolidated Balance Sheets (Parenthetical) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013 USD ($)	Jun. 30, 2013 EUR (€)	Dec. 31, 2012 USD ($)	Dec. 31, 2012 EUR (€)	Jun. 30, 2013 Variable Interest Entity, Primary Beneficiary USD ($)	Dec. 31, 2012 Variable Interest Entity, Primary Beneficiary USD ($)
Cash and cash equivalents related to variable interest entities (VIEs)	$ 426,609		$ 643,395		$ 208,819	$ 142,285
Accounts receivable, net related to VIEs	1,354,152		752,985		167,206	63,649
Costs and estimated earnings in excess of billings related to VIEs	781,323		303,540		105,669	38,967
Property and equipment, net related to VIEs	801,889		285,871		24,627	0
Other non-current assets related to VIEs	153,652		58,762		25,513	0
Accounts payable related to VIEs	1,092,637		654,504		247,434	87,301
Billings in excess of costs and estimated earnings related to VIEs	$ 2,136,814		$ 758,938		$ 47,550	$ 39,105
Common stock, par value (in euros per share)		€ 0.01		€ 0.01
Common stock, shares authorized	250,000	250,000	250,000	250,000
Common stock, shares issued	107,857	107,857	101,522	101,522
Common stock, shares outstanding	107,261	107,261	96,835	96,835
Treasury stock, shares	596	596	4,688	4,688