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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income, as reported	$ 267,733	$ 218,744	$ 753,897	$ 619,356
Other comprehensive income:
Change in foreign currency translation adjustment	(4,463)	1,329	(13,728)	7,641
Available-for-sale investments:
Change in net unrealized (losses) gains	(118)	(29)	610	75
Net change in available-for-sale investments	(118)	(29)	610	75
Other comprehensive (loss) income	(4,581)	1,300	(13,118)	7,716
Comprehensive income	$ 263,152	$ 220,044	$ 740,779	$ 627,072

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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