Quarterly report pursuant to Section 13 or 15(d)

Leases - Subleases (Details)

v3.20.1
Leases - Subleases (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Leases [Abstract]      
Sublease Payments Receivable in 2020 $ 3   $ 9
Sublease Income, Total 52 $ 37  
Sublease Income, Variable $ 15 $ 5