XML 103 R86.htm IDEA: XBRL DOCUMENT v3.6.0.2
Commitments and Contingencies Noncancelable Operating Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]      
Minimum commitments, 2017 $ 294    
Minimum commitments, 2018 280    
Minimum commitments, 2019 249    
Minimum commitments, 2020 196    
Minimum commitments, 2021 166    
Minimum commitments, Thereafter 482    
Sublease income, 2017 (62)    
Sublease income, 2018 (61)    
Sublease income, 2019 (57)    
Sublease income, 2020 (45)    
Sublease income, 2021 (39)    
Sublease Income, thereafter (210)    
Net minimum commitments, 2017 232    
Net minimum commitments, 2018 219    
Net minimum commitments, 2019 192    
Net minimum commitments, 2020 151    
Net minimum commitments, 2021 127    
Net minimum commitments, thereafter 272    
Rental expense under operating leases $ 308 $ 357 $ 444