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Equity	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Equity	EquityShare Repurchases. During the six months ended June 30, 2018, we repurchased (i) 12,588,800 shares of our class A ordinary shares at an average price per share of $30.15 and (ii) 29,342,800 shares of our class C ordinary shares at an average price per share of $30.97, for an aggregate purchase price of $1,288.3 million, including direct acquisition costs. At June 30, 2018, the remaining amount authorized for share repurchases was $783.9 million. On July 31, 2018, our board of directors authorized an additional $500.0 million for share repurchases.

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No definition available.

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- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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