Quarterly report pursuant to Section 13 or 15(d)

Leases (Details)

v3.19.1
Leases (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]  
Finance lease, renewal term (years) 5 years
Operating lease not yet commenced, value $ 33
Operating lease not yet commenced, term 11 years
Minimum  
Lessee, Lease, Description [Line Items]  
Operating lease obligations, term (years) 1 year
Finance lease obligations, term (years) 1 year
Maximum  
Lessee, Lease, Description [Line Items]  
Operating lease obligations, term (years) 19 years
Finance lease obligations, term (years) 19 years
Operating lease, renewal term (years) 5 years
Option to terminate lease, term of option (years) 1 year