Assets, Liabilities and Temporary Equity Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Liabilities
Contingent earn-out obligations	$ 28,058	$ 292,042
Fair Value, Measurements, Recurring
Assets
Available for sale securities	19,421	15,185
Funds on deposit with third parties	79,317	70,922
Liabilities
Interest rate swap agreements	12,069	18,994
Contingent earn-out obligations	28,058	292,042
Temporary equity
Noncontrolling interests subject to put provisions	697,300	580,692
Fair Value, Measurements, Recurring \| Interest rate cap agreements
Assets
Interest rate derivative agreements	7,567	65
Fair Value, Measurements, Recurring \| Interest rate swap agreements
Assets
Interest rate derivative agreements	10,004
Fair Value, Measurements, Recurring \| Level 1
Assets
Available for sale securities	19,421	15,185
Funds on deposit with third parties	79,317	16,090
Fair Value, Measurements, Recurring \| Level 2
Assets
Funds on deposit with third parties		54,832
Liabilities
Interest rate swap agreements	12,069	18,994
Fair Value, Measurements, Recurring \| Level 2 \| Interest rate cap agreements
Assets
Interest rate derivative agreements	7,567	65
Fair Value, Measurements, Recurring \| Level 2 \| Interest rate swap agreements
Assets
Interest rate derivative agreements	10,004
Fair Value, Measurements, Recurring \| Level 3
Liabilities
Contingent earn-out obligations	28,058	292,042
Temporary equity
Noncontrolling interests subject to put provisions	$ 697,300	$ 580,692

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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