Revenue and Credit Losses - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net Revenue	$ 4,048.0	$ 3,725.9	$ 7,909.8	$ 7,307.0
Revenue as a percentage of total revenue	100.00%	100.00%	100.00%	100.00%
Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 208.2	$ 197.3	$ 391.0	$ 371.0
Revenue as a percentage of total revenue	5.10%	5.30%	4.90%	5.10%
Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	$ 440.2	$ 431.0	$ 844.6	$ 823.6
Revenue as a percentage of total revenue	10.90%	11.60%	10.70%	11.30%
Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ 472.6	$ 398.3	$ 895.9	$ 806.6
Revenue as a percentage of total revenue	11.70%	10.70%	11.30%	11.00%
Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 204.2	$ 156.3	$ 392.7	$ 304.3
Revenue as a percentage of total revenue	5.00%	4.10%	5.00%	4.20%
Recycling processing and commodity sales
Disaggregation of Revenue [Line Items]
Net Revenue	$ 107.5	$ 79.5	$ 203.0	$ 150.1
Revenue as a percentage of total revenue	2.70%	2.10%	2.60%	2.10%
Other non-core
Disaggregation of Revenue [Line Items]
Net Revenue	$ 96.7	$ 76.8	$ 189.7	$ 154.2
Revenue as a percentage of total revenue	2.30%	2.00%	2.40%	2.10%
Operating Segments \| Collection
Disaggregation of Revenue [Line Items]
Net Revenue	$ 2,722.8	$ 2,543.0	$ 5,385.6	$ 5,001.5
Revenue as a percentage of total revenue	67.30%	68.30%	68.10%	68.40%
Operating Segments \| Residential
Disaggregation of Revenue [Line Items]
Net Revenue	$ 733.4	$ 700.2	$ 1,456.6	$ 1,385.3
Revenue as a percentage of total revenue	18.10%	18.80%	18.40%	18.90%
Operating Segments \| Small-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 1,200.9	$ 1,087.5	$ 2,389.9	$ 2,143.9
Revenue as a percentage of total revenue	29.70%	29.20%	30.20%	29.30%
Operating Segments \| Large-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 770.2	$ 737.5	$ 1,503.0	$ 1,439.4
Revenue as a percentage of total revenue	19.00%	19.80%	19.00%	19.70%
Operating Segments \| Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 18.3	$ 17.8	$ 36.1	$ 32.9
Revenue as a percentage of total revenue	0.50%	0.50%	0.50%	0.50%
Operating Segments \| Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 457.7	$ 435.2	$ 877.1	$ 836.2
Operating Segments \| Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	761.2	740.6	1,466.0	1,429.3
Operating Segments \| Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	489.7	419.7	928.9	849.9
Intersegment Eliminations \| Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	(249.5)	(237.9)	(486.1)	(465.2)
Intersegment Eliminations \| Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	(321.0)	(309.6)	(621.4)	(605.7)
Intersegment Eliminations \| Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ (17.1)	$ (21.4)	$ (33.0)	$ (43.3)