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Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 66.9	$ 70.4
Operating cash flows from finance leases	29.6	30.0
Financing cash flows from finance leases	22.5	19.5
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	39.0	43.8
Finance leases	$ 29.6	$ 34.2

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Cash Paid for Amounts Included in The Measurement of Lease Liabilities [Abstract]

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Right-of-use Assets Obtained in Exchange for Lease Obligations [Abstract]

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Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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