Revenue and Credit Losses - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Net Revenue	$ 3,825.9	$ 3,597.8	$ 11,132.9	$ 9,981.5
Revenue as a percentage of total revenue	100.00%	100.00%	100.00%	100.00%
Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 206.2	$ 189.3	$ 577.2	$ 546.0
Revenue as a percentage of total revenue	5.40%	5.30%	5.20%	5.50%
Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	$ 436.3	$ 412.2	$ 1,259.8	$ 1,167.8
Revenue as a percentage of total revenue	11.40%	11.50%	11.30%	11.70%
Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ 404.8	$ 397.2	$ 1,211.5	$ 790.7
Revenue as a percentage of total revenue	10.60%	11.00%	10.90%	7.90%
Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 162.1	$ 172.2	$ 466.5	$ 542.8
Revenue as a percentage of total revenue	4.20%	4.80%	4.10%	5.40%
Recycling processing and commodity sales
Disaggregation of Revenue [Line Items]
Net Revenue	$ 76.3	$ 86.9	$ 226.6	$ 300.4
Revenue as a percentage of total revenue	2.00%	2.40%	2.00%	3.00%
Other non-core
Disaggregation of Revenue [Line Items]
Net Revenue	$ 85.8	$ 85.3	$ 239.9	$ 242.4
Revenue as a percentage of total revenue	2.20%	2.40%	2.10%	2.40%
Operating Segments \| Collection
Disaggregation of Revenue [Line Items]
Net Revenue	$ 2,616.5	$ 2,426.9	$ 7,617.9	$ 6,934.2
Revenue as a percentage of total revenue	68.40%	67.40%	68.50%	69.50%
Operating Segments \| Residential
Disaggregation of Revenue [Line Items]
Net Revenue	$ 718.2	$ 680.9	$ 2,103.4	$ 1,963.0
Revenue as a percentage of total revenue	18.80%	18.90%	18.90%	19.70%
Operating Segments \| Small-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 1,126.3	$ 1,021.8	$ 3,270.2	$ 2,912.9
Revenue as a percentage of total revenue	29.40%	28.40%	29.40%	29.20%
Operating Segments \| Large-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 753.0	$ 709.6	$ 2,192.4	$ 2,018.0
Revenue as a percentage of total revenue	19.70%	19.70%	19.70%	20.20%
Operating Segments \| Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 19.0	$ 14.6	$ 51.9	$ 40.3
Revenue as a percentage of total revenue	0.50%	0.40%	0.50%	0.40%
Operating Segments \| Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 444.3	$ 412.8	$ 1,280.5	$ 1,183.5
Operating Segments \| Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	743.2	703.6	2,172.4	2,019.7
Operating Segments \| Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	424.0	411.0	1,274.0	827.8
Intersegment Eliminations \| Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	(238.1)	(223.5)	(703.3)	(637.5)
Intersegment Eliminations \| Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	(306.9)	(291.4)	(912.6)	(851.9)
Intersegment Eliminations \| Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ (19.2)	$ (13.8)	$ (62.5)	$ (37.1)