Acquisitions - Summary of Final Estimated Fair Value of Intangible Assets Acquired and the Related Estimated Useful Lives (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Software
Business Acquisition [Line Items]
Useful lives (in years)	5 years 3 months 18 days
Non-compete agreements
Business Acquisition [Line Items]
Useful lives (in years)	5 years
Servicos e Technologia de Pagamentos S.A.
Business Acquisition [Line Items]
Intangible assets	$ 584,274
Servicos e Technologia de Pagamentos S.A. | Trade names and trademarks—indefinite lived
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 189,547
Servicos e Technologia de Pagamentos S.A. | Customer Relationships | Minimum
Business Acquisition [Line Items]
Useful lives (in years)	8 years 6 months
Servicos e Technologia de Pagamentos S.A. | Customer Relationships | Maximum
Business Acquisition [Line Items]
Useful lives (in years)	17 years
Servicos e Technologia de Pagamentos S.A. | Customer Relationships And Other Intangibles
Business Acquisition [Line Items]
Intangible assets	$ 349,310
Servicos e Technologia de Pagamentos S.A. | Non-compete agreements
Business Acquisition [Line Items]
Intangible assets	$ 21,600
Servicos e Technologia de Pagamentos S.A. | Technology
Business Acquisition [Line Items]
Useful lives (in years)	6 years
Intangible assets	$ 45,417
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Intangible assets	$ 61,823
Series of Individually Immaterial Business Acquisitions | Customer Relationships | Minimum
Business Acquisition [Line Items]
Useful lives (in years)	10 years
Series of Individually Immaterial Business Acquisitions | Customer Relationships | Maximum
Business Acquisition [Line Items]
Useful lives (in years)	18 years
Series of Individually Immaterial Business Acquisitions | Customer Relationships And Other Intangibles
Business Acquisition [Line Items]
Intangible assets	$ 61,823
2015 Acquisitions
Business Acquisition [Line Items]
Intangible assets	39,791
2015 Acquisitions | Customer Relationships
Business Acquisition [Line Items]
Intangible assets	$ 39,791
2015 Acquisitions | Customer Relationships | Minimum
Business Acquisition [Line Items]
Useful lives (in years)	14 years
2015 Acquisitions | Customer Relationships | Maximum
Business Acquisition [Line Items]
Useful lives (in years)	20 years
Comdata Inc.
Business Acquisition [Line Items]
Intangible assets		$ 1,630,700
Comdata Inc. | Trade names and trademarks—indefinite lived
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 237,100
Comdata Inc. | Customer Relationships
Business Acquisition [Line Items]
Useful lives (in years)		19 years
Intangible assets		$ 1,269,700
Comdata Inc. | Software
Business Acquisition [Line Items]
Intangible assets		$ 123,300
Comdata Inc. | Software | Minimum
Business Acquisition [Line Items]
Useful lives (in years)		4 years
Comdata Inc. | Software | Maximum
Business Acquisition [Line Items]
Useful lives (in years)		7 years
Comdata Inc. | Non-compete agreements
Business Acquisition [Line Items]
Useful lives (in years)		3 years
Intangible assets		$ 600
Other Acquisitions
Business Acquisition [Line Items]
Intangible assets		47,974
Other Acquisitions | Trade names and trademarks—indefinite lived
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 2,900
Other Acquisitions | Customer Relationships
Business Acquisition [Line Items]
Useful lives (in years)		8 years
Intangible assets		$ 15,574
Other Acquisitions | Franchisee Agreement
Business Acquisition [Line Items]
Useful lives (in years)		20 years
Intangible assets		$ 29,500