Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 74.3	$ 79.3	$ 225.5	$ 214.0
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year		1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	20 years		20 years
Lease with Affiliate [Member]
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 32.3	$ 32.3	$ 96.8	$ 96.8
Lease with Affiliate [Member] | Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	7 years		7 years
Lease with Affiliate [Member] | Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	15 years		15 years
Water Treatment Equipment Lease
Lessee, Lease, Description [Line Items]
Lessee, Lease Not Yet Commenced, Term Of Contract			15 years
Lessee, Leases Not Yet Commenced, Liability	$ 34.1		$ 34.1
Mildew Catalyst Lease
Lessee, Lease, Description [Line Items]
Lessee, Lease Not Yet Commenced, Term Of Contract			7 years
Lessee, Leases Not Yet Commenced, Liability	$ 24.2		$ 24.2