XML 71 R67.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Lessee, Lease, Description [Line Items]      
Lease, cost $ 30.2 $ 32.6 $ 31.0
Minimum      
Lessee, Lease, Description [Line Items]      
Lessee, operating lease, option to terminate or extend 1 year