Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Summary of restricted cash and marketable securities

The following table summarizes our restricted cash and marketable securities:

	March 31, 2019		December 31, 2018
Capping, closure and post-closure obligations	$	29.8	$	29.5
Insurance	85.3		78.6
Total restricted cash and marketable securities	$	115.1	$	108.1

Schedule of cash equivalents, restricted cash and marketable securities

Beginning-of-period and end-of-period cash, cash equivalents, restricted cash and restricted cash equivalents as presented in the statement of cash flows is reconciled as follows:

	March 31, 2019		December 31, 2018		March 31, 2018		December 31, 2017
Cash and cash equivalents	$	68.0	$	70.5	$	62.6	$	83.3
Restricted cash and marketable securities	115.1		108.1		116.3		141.1
Less: restricted marketable securities	(46.6)		(45.3)		(44.7)		(45.3)
Cash, cash equivalents, restricted cash and restricted cash equivalents	$	136.5	$	133.3	$	134.2	$	179.1