Acquisition - Summary of Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 3,761,378us-gaap_Goodwill	$ 3,811,862us-gaap_Goodwill
Comdata Inc. [Member]
Business Acquisition [Line Items]
Restricted cash		93,312
Trade and other receivables		634,335
Prepaid expenses and other		16,077
Property and equipment		17,984
Goodwill		2,262,480
Other intangible assets		1,630,700
Notes and other liabilities assumed		(802,112)
Deferred tax liabilities		(425,660)
Other long term liabilities		(6,841)
Aggregate purchase price		3,420,275
Other Acquisitions [Member]
Business Acquisition [Line Items]
Trade and other receivables		62,604
Prepaid expenses and other		232
Property and equipment		71
Goodwill		32,833
Other intangible assets		47,992
Notes and other liabilities assumed		(66,499)
Aggregate purchase price		$ 77,233

Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Restricted Cash

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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