Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Temporary Equity
Redeemable noncontrolling interests	$ (30,280)	$ (26,564)
Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	791	46
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	(1,449)	(4,123)
Interest Rate Cap [Member] | Other Assets [Member]
Assets
Interest rate cap contracts	4	202
Level 1 [Member]
Temporary Equity
Redeemable noncontrolling interests	0	0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	0	0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	0	0
Level 1 [Member] | Interest Rate Cap [Member] | Other Assets [Member]
Assets
Interest rate cap contracts	0	0
Level 2 [Member]
Temporary Equity
Redeemable noncontrolling interests	0	0
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	791	46
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	(1,449)	(4,123)
Level 2 [Member] | Interest Rate Cap [Member] | Other Assets [Member]
Assets
Interest rate cap contracts	4	202
Level 3 [Member]
Temporary Equity
Redeemable noncontrolling interests	(30,280)	(26,564)
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	0	0
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	0	0
Level 3 [Member] | Interest Rate Cap [Member] | Other Assets [Member]
Assets
Interest rate cap contracts	$ 0	$ 0