The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Segments - Schedule of Company's Segment Results (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues, net	$ 376,697us-gaap_SalesRevenueNet	$ 295,283us-gaap_SalesRevenueNet	$ 273,502us-gaap_SalesRevenueNet	$ 253,908us-gaap_SalesRevenueNet	$ 255,501us-gaap_SalesRevenueNet	$ 225,150us-gaap_SalesRevenueNet	$ 220,869us-gaap_SalesRevenueNet	$ 193,651us-gaap_SalesRevenueNet	$ 1,199,390us-gaap_SalesRevenueNet	$ 895,171us-gaap_SalesRevenueNet	$ 707,534us-gaap_SalesRevenueNet
Operating income	172,622us-gaap_OperatingIncomeLoss	144,207us-gaap_OperatingIncomeLoss	134,484us-gaap_OperatingIncomeLoss	114,136us-gaap_OperatingIncomeLoss	106,050us-gaap_OperatingIncomeLoss	111,255us-gaap_OperatingIncomeLoss	109,074us-gaap_OperatingIncomeLoss	94,253us-gaap_OperatingIncomeLoss	565,449us-gaap_OperatingIncomeLoss	420,632us-gaap_OperatingIncomeLoss	324,928us-gaap_OperatingIncomeLoss
Depreciation and amortization									112,361us-gaap_DepreciationAndAmortization	72,737us-gaap_DepreciationAndAmortization	52,036us-gaap_DepreciationAndAmortization
Capital expenditures									27,070	20,785	19,111
Long-lived assets (excluding goodwill)	2,583,362us-gaap_NoncurrentAssets				1,025,998us-gaap_NoncurrentAssets				2,583,362us-gaap_NoncurrentAssets	1,025,998us-gaap_NoncurrentAssets	599,907us-gaap_NoncurrentAssets
North America [Member]
Segment Reporting Information [Line Items]
Revenues, net									668,328	460,705	400,164
Operating income									287,303	220,526	196,677
Depreciation and amortization									39,275	22,267	20,289
Capital expenditures									9,407	6,132	7,735
Long-lived assets (excluding goodwill)	1,833,311				173,608				1,833,311	173,608	152,516
International [Member]
Segment Reporting Information [Line Items]
Revenues, net									531,062	434,466	307,370
Operating income									278,146	200,106	128,251
Depreciation and amortization									73,086	50,470	31,747
Capital expenditures									17,663	14,653	11,376
Long-lived assets (excluding goodwill)	$ 750,051				$ 852,390				$ 750,051	$ 852,390	$ 447,391