Equity	3 Months Ended
Mar. 31, 2018
Equity [Abstract]
Equity	Equity During the three months ended March 31, 2018, we repurchased (i) 2,258,800 shares of our class A ordinary shares at an average price per share of $32.44 and (ii) 12,551,500 shares of our class C ordinary shares at an average price per share of $33.70, for an aggregate purchase price of $496.3 million, including direct acquisition costs. At March 31, 2018, the remaining amount authorized for share repurchases was $1,571.5 million.

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

Name:	us-gaap_StockholdersEquityNoteDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration