Quarterly report pursuant to Section 13 or 15(d)

Leases Narrative (Details)

v3.21.2
Leases Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Restructuring $ 0 $ 2   $ (1) $ 27  
Restructuring Plan 2020 [Member]            
Restructuring           $ 37
Facility Closing [Member]            
Restructuring       $ 0    
COVID-19 [Member] | Restructuring Plan 2020 [Member]            
Restructuring           36
COVID-19 [Member] | Travel and Membership | Facility Closing [Member] | Restructuring Plan 2020 [Member]            
Restructuring     $ 22      
COVID-19 [Member] | Vacation Ownership | Facility Closing [Member] | Restructuring Plan 2020 [Member]            
Restructuring           $ 2
COVID-19 [Member] | Asset Impairments [Member] | Travel and Membership            
Operating Lease, Impairment Loss     $ 24      
COVID-19 [Member] | Asset Impairments [Member] | Vacation Ownership            
Operating Lease, Impairment Loss   $ 5        
Minimum [Member]            
Lessee, Operating Lease, Remaining Lease Term 1 year     1 year    
Maximum [Member]            
Lessee, Operating Lease, Remaining Lease Term 20 years     20 years    
Lessee, Operating Lease, Renewal Term 10 years     10 years    
Lessee, Operating Lease, Termination Period       1 year