Uncertain Tax Positions for Liabilities Associated with Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits [Line Items]
Beginning balance	$ 75,026	$ 89,281	$ 113,232
Increase in unrecognized tax benefits related to prior years	7,645	1,855	6,226
Decrease in unrecognized tax benefits related to prior years	(6,134)	(6,415)	(10,887)
Unrecognized tax benefits related to the current year	4,256	4,246	1,956
Reductions in unrecognized tax benefits due to settlements	(8,816)	(7,678)	(2,011)
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations	(3,503)	(5,852)	(16,209)
Increase (decrease) in unrecognized tax benefits due to foreign currency translation	169	(411)	(3,026)
Ending balance	$ 68,643	$ 75,026	$ 89,281

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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