Other Comprehensive Income (Loss) [Roll Forward]

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Amount of stockholders' equity including the portion attributable to noncontrolling interests, after the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount of increase in unrecognized tax benefits resulting from foreign currency translation.

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Other Comprehensive Income (Loss) and Related Tax Effects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Jan. 01, 2017
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 4,177,385	$ 4,006,805	$ 3,781,642
Cumulative effect of adoption of the New Investment Standard				$ 23,123	$ 14,508
Adjusted opening balance				4,200,508	4,021,313
Other comprehensive income before reclassifications	(37,271)	(5,891)
Amounts reclassified to net income	31,858	540
Other comprehensive loss	(5,413)	(4,942)	(7,756)
Ending balance	4,155,474	4,177,385	4,006,805
Unrecognized foreign currency translation tax benefits		7,000
Cumulative Foreign Currency Translation Losses
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(119,430)	(135,434)
Cumulative effect of adoption of the New Investment Standard				0
Adjusted opening balance				(119,430)
Other comprehensive income before reclassifications	(34,399)	16,004
Amounts reclassified to net income	32,136	0
Other comprehensive loss	(2,263)	16,004
Ending balance	(121,693)	(119,430)	(135,434)
Unrealized Gain (Loss) On Available-For-Sale Securities
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(10,801)	10,646
Cumulative effect of adoption of the New Investment Standard				10,467
Adjusted opening balance				(334)
Other comprehensive income before reclassifications	(962)	(21,987)
Amounts reclassified to net income	(278)	540
Other comprehensive loss	(1,240)	(21,447)
Ending balance	(1,574)	(10,801)	10,646
Other
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	77	(15)
Cumulative effect of adoption of the New Investment Standard				0
Adjusted opening balance				77
Other comprehensive income before reclassifications	(1,910)	92
Amounts reclassified to net income	0	0
Other comprehensive loss	(1,910)	92
Ending balance	(1,833)	77	(15)
Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(130,154)	(124,803)	(117,233)
Cumulative effect of adoption of the New Investment Standard				10,467
Adjusted opening balance				$ (119,687)	$ (124,803)
Other comprehensive loss	(5,413)	(5,351)
Ending balance	$ (125,100)	$ (130,154)	$ (124,803)