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Guarantees and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
 6 Months Ended
Jul. 11, 2018
Dec. 31, 2018
GXS Group, Inc.    
Loss Contingencies [Line Items]    
Loss contingency accrual   $ 1.5
GXS India    
Loss Contingencies [Line Items]    
Loss contingency accrual   1.3
Internal Revenue Service (IRS)    
Loss Contingencies [Line Items]    
Estimated amount of loss resulting from an adverse tax position   770.0
Income tax examination, tax   455.0
Income tax examination, penalties   130.0
Income tax examination, interest   185.0
Internal Revenue Service (IRS) | Tax Year 2010    
Loss Contingencies [Line Items]    
Estimated amount of loss resulting from an adverse tax position $ 335.0  
Additional tax expense, as a percent 20.00%  
Internal Revenue Service (IRS) | Tax Year 2012    
Loss Contingencies [Line Items]    
Additional tax expense, as a percent 40.00%  
Income tax examination, change in liability $ 80.0  
Canada Revenue Agency (CRA)    
Loss Contingencies [Line Items]    
Estimated amount of loss resulting from an adverse tax position   $ 23.0
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
Canada Revenue Agency (CRA) | Tax Year 2013    
Loss Contingencies [Line Items]    
Additional tax expense, as a percent   10.00%
Income tax examination, estimate of increase to taxable income   $ 90.0