Acquisition - Summary of Preliminary Estimated Fair Value of Intangible Assets Acquired and the Related Estimated Useful Lives (Details) - USD ($) $ in Thousands				12 Months Ended
	Sep. 26, 2017	Aug. 09, 2017	Aug. 31, 2016	Dec. 31, 2016
Cambridge
Business Acquisition [Line Items]
Other intangible assets		$ 358,168
Cambridge | Customer relationships and other identifiable intangible assets
Business Acquisition [Line Items]
Useful Lives (in Years)		10 years
Finite-lived intangible assets		$ 358,168
Russian fuel card provider | Customer relationships and other identifiable intangible assets
Business Acquisition [Line Items]
Useful Lives (in Years)	8 years
Finite-lived intangible assets	$ 46,034
STP
Business Acquisition [Line Items]
Other intangible assets			$ 548,682
STP | Customer relationships and other identifiable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible assets			$ 348,414
STP | Customer relationships and other identifiable intangible assets | Minimum
Business Acquisition [Line Items]
Useful Lives (in Years)			8 years 6 months
STP | Customer relationships and other identifiable intangible assets | Maximum
Business Acquisition [Line Items]
Useful Lives (in Years)			20 years
STP | Technology
Business Acquisition [Line Items]
Useful Lives (in Years)			6 years
Finite-lived intangible assets			$ 45,417
Other
Business Acquisition [Line Items]
Other intangible assets				$ 61,823
Other | Customer relationships and other identifiable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible assets				$ 61,823
Other | Customer relationships and other identifiable intangible assets | Minimum
Business Acquisition [Line Items]
Useful Lives (in Years)				10 years
Other | Customer relationships and other identifiable intangible assets | Maximum
Business Acquisition [Line Items]
Useful Lives (in Years)				18 years
Trade names and trademarks—indefinite lived | STP
Business Acquisition [Line Items]
Customer relationships—Accounts Payable Solutions			$ 154,851