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
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,508 $ 4,183
Accumulated Amortization (2,611) (2,425)
Net Carrying Value 1,897 1,758
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 3,192 2,933
Accumulated Amortization (2,269) (2,157)
Net Carrying Value 923 776
Licenses    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 165 131
Accumulated Amortization (71) (70)
Net Carrying Value 94 61
Franchise rights    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 128 128
Accumulated Amortization (95) (90)
Net Carrying Value 33 38
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 751 724
Accumulated Amortization (141) (85)
Net Carrying Value 610 639
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 72 67
Accumulated Amortization (35) (23)
Net Carrying Value $ 37 $ 44