Condensed Consolidating Financial Information Condensed Consolidating Financial Information (Cash Flow) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$ 370,039	$ 375,762	$ (49,463)
Cash flows from investing activities:
Capital expenditures	(68,321)	(39,739)	(24,303)
Payments for acquisitions, net of cash acquired	(24,199)	(1,184,587)	0
Acquisition of investments	(24,250)	(5,375)	(2,500)
(Increase) decrease to investment in affiliates	0	0
Proceeds from insurance settlements	0	654	657
Proceeds from the sale of an investment	0	5,837	0
Net cash used in investing activities	(116,770)	(1,223,210)	(26,146)
Cash flows from financing activities:
Principal payments on long-term debt	(74,000)	0	(880,000)
Payment of promissory note	(40,000)	0	0
Deemed repurchase of restricted stock/units	(14,452)	(22,192)	(12,135)
Proceeds from stock option exercises	1,340	1,103	1,759
Excess tax benefits from share-based compensation arrangements	4,610	6,798	4,975
Principal payments on capital lease obligations	(2,945)	(2,401)	(1,558)
Cash contributions from member	0	0
Distributions to noncontrolling interest	3,154	0	0
Contributions from noncontrolling interest	1,322	835	0
Net cash (used in) provided by financing activities	(127,279)	574,877	(19,953)
Net increase (decrease) in cash and cash equivalents from continuing operations	125,990	(272,571)	(95,562)
Cash flows from discontinued operations:
Net cash used in operating activities	0	(2,955)	0
Net decrease in cash and cash equivalents from discontinued operations	0	(2,955)	0
Effect of exchange rate changes on cash and cash equivalents	(11,036)	(45,058)	6,543
Payment of promissory note	0	600,000	880,000
Payments for financing costs	0	(9,266)	(12,994)
Deemed repurchases of restricted stock		(22,192)
Long-term intercompany debt		0
Cash and cash equivalents	316,321	201,367	521,951	$ 610,970
Intangible assets, net	549,180	590,824
Consolidation, Eliminations [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities	(699,029)	(375,043)
Cash flows from investing activities:
Capital expenditures	0	0
Payments for acquisitions, net of cash acquired	0	$ 0
Acquisition of investments	0
(Increase) decrease to investment in affiliates	625,828	$ 293,063
Proceeds from insurance settlements		0
Proceeds from the sale of an investment		0
Net cash used in investing activities	625,828	293,063
Cash flows from financing activities:
Principal payments on long-term debt	0
Payment of promissory note	0
Deemed repurchase of restricted stock/units	0
Proceeds from stock option exercises	0	0
Excess tax benefits from share-based compensation arrangements	0	0
Principal payments on capital lease obligations	0	0
Cash contributions from member	0	0
Distributions to noncontrolling interest	0
Contributions from noncontrolling interest	0	0
Net cash (used in) provided by financing activities	0	0
Net increase (decrease) in cash and cash equivalents from continuing operations	(73,201)	(81,980)
Cash flows from discontinued operations:
Net cash used in operating activities		0
Net decrease in cash and cash equivalents from discontinued operations		0
Effect of exchange rate changes on cash and cash equivalents	73,201	81,980
Payment of promissory note		0
Payments for financing costs		0
Deemed repurchases of restricted stock		0
Long-term intercompany debt		0
Cash and cash equivalents	0	0	0
Intangible assets, net	0	0
Parent Company [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities	1,050,818	281,275
Cash flows from investing activities:
Capital expenditures	(9)	(1,418)
Payments for acquisitions, net of cash acquired	0	$ 0
Acquisition of investments	0
(Increase) decrease to investment in affiliates	(890,626)	$ (149,582)
Proceeds from insurance settlements		0
Proceeds from the sale of an investment		0
Net cash used in investing activities	(890,635)	(151,000)
Cash flows from financing activities:
Principal payments on long-term debt	(74,000)
Payment of promissory note	0
Deemed repurchase of restricted stock/units	(14,452)
Proceeds from stock option exercises	1,340	1,103
Excess tax benefits from share-based compensation arrangements	4,610	6,798
Principal payments on capital lease obligations	0	0
Cash contributions from member	0	0
Distributions to noncontrolling interest	0
Contributions from noncontrolling interest	0	0
Net cash (used in) provided by financing activities	(82,502)	(47,656)
Net increase (decrease) in cash and cash equivalents from continuing operations	77,681	82,619
Cash flows from discontinued operations:
Net cash used in operating activities		0
Net decrease in cash and cash equivalents from discontinued operations		0
Effect of exchange rate changes on cash and cash equivalents	(78,828)	(81,980)
Payment of promissory note		600,000
Payments for financing costs		(9,266)
Deemed repurchases of restricted stock		(22,192)
Long-term intercompany debt		(624,099)
Cash and cash equivalents	434	1,581	942
Intangible assets, net	0	0
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities	(294,219)	586,220
Cash flows from investing activities:
Capital expenditures	(40,592)	(27,230)
Payments for acquisitions, net of cash acquired	0	0
Acquisition of investments	0	(5,251)
(Increase) decrease to investment in affiliates	466,322	(143,481)
Proceeds from insurance settlements		654
Proceeds from the sale of an investment		0
Net cash used in investing activities	425,730	(175,308)
Cash flows from financing activities:
Principal payments on long-term debt	0
Payment of promissory note	0
Deemed repurchase of restricted stock/units	0
Proceeds from stock option exercises	0	0
Excess tax benefits from share-based compensation arrangements	0	0
Principal payments on capital lease obligations	(2,218)	(1,910)
Cash contributions from member	8,492	(1,386,837)
Distributions to noncontrolling interest	0
Contributions from noncontrolling interest	0	0
Net cash (used in) provided by financing activities	6,274	(764,648)
Net increase (decrease) in cash and cash equivalents from continuing operations	137,785	(353,736)
Cash flows from discontinued operations:
Net cash used in operating activities		0
Net decrease in cash and cash equivalents from discontinued operations		0
Effect of exchange rate changes on cash and cash equivalents	(73,201)	(81,980)
Payment of promissory note		0
Payments for financing costs		0
Deemed repurchases of restricted stock		0
Long-term intercompany debt		624,099
Cash and cash equivalents	148,260	83,676	519,392
Intangible assets, net	190,041	199,785
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities	312,469	(116,690)
Cash flows from investing activities:
Capital expenditures	(27,720)	(11,091)
Payments for acquisitions, net of cash acquired	(24,199)	(1,184,587)
Acquisition of investments	(24,250)	$ (124)
(Increase) decrease to investment in affiliates	(201,524)
Proceeds from insurance settlements		$ 0
Proceeds from the sale of an investment		5,837
Net cash used in investing activities	(277,693)	(1,189,965)
Cash flows from financing activities:
Principal payments on long-term debt	0
Payment of promissory note	(40,000)
Deemed repurchase of restricted stock/units	0
Proceeds from stock option exercises	0	0
Excess tax benefits from share-based compensation arrangements	0	0
Principal payments on capital lease obligations	(727)	(491)
Cash contributions from member	(8,492)	1,386,837
Distributions to noncontrolling interest	3,154
Contributions from noncontrolling interest	1,322	835
Net cash (used in) provided by financing activities	(51,051)	1,387,181
Net increase (decrease) in cash and cash equivalents from continuing operations	(16,275)	80,526
Cash flows from discontinued operations:
Net cash used in operating activities		(2,955)
Net decrease in cash and cash equivalents from discontinued operations		(2,955)
Effect of exchange rate changes on cash and cash equivalents	67,792	36,922
Payment of promissory note		0
Payments for financing costs		0
Deemed repurchases of restricted stock		0
Long-term intercompany debt		0
Cash and cash equivalents	167,627	116,110	$ 1,617
Intangible assets, net	$ 359,139	$ 391,039