Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details)

v3.21.1
Leases - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Lessee, Lease, Description [Line Items]    
Operating lease expense $ 66 $ 62
Lease liabilities reduced by cash paid 67  
ROU assets from new operating leases in exchange for lease liability 96  
Operating leases not yet commenced $ 31  
Weighted average remaining lease term 9 years 6 months  
Weighted-average discount rate for operating leases 3.20%  
Minimum    
Lessee, Lease, Description [Line Items]    
Operating leases, not yet commenced, lease term 7 years  
Maximum    
Lessee, Lease, Description [Line Items]    
Operating leases, not yet commenced, lease term 9 years