Guarantees and Contingencies - Additional Information (Details) - USD ($) $ in Millions			6 Months Ended
	Oct. 01, 2017	Jul. 17, 2015	Dec. 31, 2017
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position			$ 600.0
GXS Group, Inc.
Loss Contingencies [Line Items]
Loss contingency accrual			3.9
GXS Group, Inc. | Municipality of Sao Paulo
Loss Contingencies [Line Items]
Payments for legal settlements	$ 1.4
GXS India
Loss Contingencies [Line Items]
Loss contingency accrual			1.3
Internal Revenue Service (IRS) | Tax Year 2010
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position		$ 280.0
Additional tax expense, as a percent		20.00%
Internal Revenue Service (IRS) | Tax Year 2012
Loss Contingencies [Line Items]
Estimated amount of loss resulting from an adverse tax position			$ 80.0
Canada Revenue Agency (CRA) | Tax Year 2012
Loss Contingencies [Line Items]
Additional tax expense, as a percent			10.00%
Income tax examination, estimate of increase to taxable income			$ 90.0