v3.19.1
Intangible Assets - Schedule of Intangible Assets by Class (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,465 $ 4,424
Accumulated Amortization 2,348 2,281
Net Book Value 2,117 2,143
Customer related intangible assets    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 2,642 2,642
Accumulated Amortization 1,330 1,294
Net Book Value 1,312 1,348
Acquired software and technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 591 591
Accumulated Amortization 497 490
Net Book Value 94 101
Trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 120 120
Accumulated Amortization 72 71
Net Book Value 48 49
Capitalized software development costs    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 846 810
Accumulated Amortization 331 314
Net Book Value 515 496
Purchased software    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 266 261
Accumulated Amortization 118 112
Net Book Value $ 148 $ 149