XML 84 R69.htm IDEA: XBRL DOCUMENT v3.8.0.1
Property and Equipment - Depreciation, Amortization, Capitalized Interest and Rent Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 111.8 $ 102.3 $ 91.0
Amortization expense 22.7 21.8 12.7
Interest capitalized 3.7 2.0 1.3
Rent expense:      
Minimum rent payments 66.5 62.6 48.8
Contingent and other rents 24.1 29.4 21.6
Other 8.9 4.0 3.8
Total rent expense $ 99.5 $ 96.0 $ 74.2