Quarterly report pursuant to Section 13 or 15(d)

Summary of Intangible Assets (Detail)

v3.8.0.1
Summary of Intangible Assets (Detail) - USD ($)
$ in Millions
Mar. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,707 $ 4,578
Accumulated Amortization (2,682) (2,614)
Net Carrying Value 2,025 1,964
Licenses    
Finite-Lived Intangible Assets [Line Items]    
Carrying value 5  
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Carrying value 200  
Capitalized software    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 3,402 3,273
Accumulated Amortization (2,357) (2,310)
Net Carrying Value 1,045 963
Licenses    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 114 114
Accumulated Amortization (17) (10)
Net Carrying Value 97 104
Franchise rights    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 146 144
Accumulated Amortization (99) (97)
Net Carrying Value 47 47
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 777 776
Accumulated Amortization (174) (160)
Net Carrying Value 603 616
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 200 200
Accumulated Amortization 0 0
Net Carrying Value 200 200
Trademarks, patents and other    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 68 71
Accumulated Amortization (35) (37)
Net Carrying Value $ 33 $ 34