Leases (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Leased Assets [Line Items]
2019		$ 81.4
2020		57.6
2021		35.9
2022		22.9
2023		17.4
Thereafter		8.6
Total Due		223.8
Rent expense		123.2	$ 125.4	$ 84.3
Real Estate
Operating Leased Assets [Line Items]
2019		50.0
2020		33.8
2021		26.8
2022		19.6
2023		16.0
Thereafter		8.6
Total Due		154.8
Vehicles and Equipment
Operating Leased Assets [Line Items]
2019	[1]	31.4
2020	[1]	23.8
2021	[1]	9.1
2022	[1]	3.3
2023	[1]	1.4
Thereafter	[1]	0.0
Total Due		$ 69.0
Minimum | Vehicles and Equipment
Operating Leased Assets [Line Items]
Term of operating lease		36
Maximum | Vehicles and Equipment
Operating Leased Assets [Line Items]
Term of operating lease		60 months

[1] The Company leases vehicles with contractual terms of 36 to 60 months that are cancellable after 12 months without penalty. Future minimum lease payments reflect only the minimum payments of the historical average holding period of these vehicles.