Employee Benefit Plans (Pension Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Multiemployer Plans [Line Items]
Republic Contributions to Plan	$ 69.4	$ 64.7	$ 59.7
Local 731 Private Scavengers and Garage Attendants Pension Trust Fund
Multiemployer Plans [Line Items]
Republic Contributions to Plan	9.7	10.2	9.3
Western Conference of Teamsters Pension Plan
Multiemployer Plans [Line Items]
Republic Contributions to Plan	44.3	39.5	36.3
New England Teamsters & Trucking Industry Pension
Multiemployer Plans [Line Items]
Republic Contributions to Plan	3.2	3.2	2.8
Midwest Operating Engineers Pension Fund
Multiemployer Plans [Line Items]
Republic Contributions to Plan	2.1	2.2	2.0
Individually significant plans
Multiemployer Plans [Line Items]
Republic Contributions to Plan	59.3	55.1	50.4
All other plans
Multiemployer Plans [Line Items]
Republic Contributions to Plan	$ 10.1	$ 9.6	$ 9.3