Quarterly report pursuant to Section 13 or 15(d)

Leases - Subleases (Details)

v3.21.2
Leases - Subleases (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Leases [Abstract]          
Sublease payments to be received $ 4   $ 4   $ 0
Sublease Income, Fixed 8 $ 15 11 $ 52  
Sublease Income, Variable 5 8 6 23  
Sublease Income, Total $ 13 $ 23 $ 17 $ 75