XML 126 R81.htm IDEA: XBRL DOCUMENT v3.6.0.2
Commitments and Contingencies - Future Minimum Operating Lease Payments and Committed Subleases Under Non-cancelable Leases (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]      
Operating lease obligations - Total Amounts $ 67    
Operating lease obligations - 2017 22    
Operating lease obligations - 2018 18    
Operating lease obligations - 2019 10    
Operating lease obligations - 2020 6    
Operating lease obligations - 2021 11    
Sublease rentals - Total Amounts (2)    
Sublease rentals - 2017 (2)    
Sublease rentals - 2018 0    
Sublease rentals - 2019 0    
Sublease rentals - 2020 0    
Sublease rentals - 2021 0    
Total committed operating leases less sublease rentals - Total Amounts 65    
Total committed operating leases less sublease rentals - 2017 20    
Total committed operating leases less sublease rentals - 2018 18    
Total committed operating leases less sublease rentals - 2019 10    
Total committed operating leases less sublease rentals - 2020 6    
Total committed operating leases less sublease rentals - 2021 11    
Rental expense 24 $ 26 $ 26
Sublease rental income $ 3 $ 3 $ 3