Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating lease costs:
Amortization of ROU assets	$ 41.3	$ 48.4	$ 85.3	$ 85.8
Total operating lease costs	41.3	48.4	85.3	85.8
Financing lease costs:
Variable lease costs	2.2	2.9	4.7	4.8
Total lease costs	70.7	70.3	143.0	125.6
Financing Leases
Financing lease costs:
Amortization of ROU assets	2.0	3.0	3.9	3.6
Interest on lease liabilities	3.7	2.1	7.3	4.2
Total financing lease costs	5.7	5.1	11.2	7.8
DLF Obligations
Financing lease costs:
Amortization of ROU assets	5.3	3.2	10.4	6.4
Interest on lease liabilities	16.2	10.7	31.4	20.8
Total financing lease costs	$ 21.5	$ 13.9	$ 41.8	$ 27.2