Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional (Details)

v3.20.1
Leases - Additional (Details)
$ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
lease
Jan. 23, 2020
USD ($)
Lessee, Lease, Description [Line Items]    
Lease terms 12 months  
Operating lease expense $ 62  
ROU assets acquired 852  
ROU liability acquired 992  
Lease liabilities reduced by cash paid 63  
Operating leases not yet commenced $ 421  
Operating leases not yet commenced, number of significant leases executed | lease 4  
Weighted average remaining lease term 6 years 9 months 18 days  
Weighted-average discount rate for operating leases 4.70%  
Minimum    
Lessee, Lease, Description [Line Items]    
Lease terms 2 years  
Maximum    
Lessee, Lease, Description [Line Items]    
Lease terms 16 years  
WellCare Health Plans, Inc.    
Lessee, Lease, Description [Line Items]    
ROU assets acquired   $ 240
ROU liability acquired   $ 260