Leases (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 8.9
Lessee, Operating Lease, Liability, Payments, Due Year Two	8.6
Lessee, Operating Lease, Liability, Payments, Due Year Three	7.7
Lessee, Operating Lease, Liability, Payments, Due Year Four	7.2
Lessee, Operating Lease, Liability, Payments, Due Year Five	6.6
Lessee, Operating Lease, Liability, Payments, Due after Year Five	167.8
Lessee, Operating Lease, Liability, Payments, Due	206.8
Lessee Imputed Interest Due- Operating	(134.7)
Operating Lease, Liability	72.1
Finance Lease, Liability, Payments, Due Next Twelve Months	41.1
Finance Lease, Liability, Payments, Due Year Two	37.2
Finance Lease, Liability, Payments, Due Year Three	32.2
Finance Lease, Liability, Payments, Due Year Four	25.4
Finance Lease, Liability, Payments, Due Year Five	15.5
Finance Lease, Liability, Payments, Due after Year Five	25.1
Finance Lease, Liability, Payment, Due	176.5
Lessee Imputed Interest Due- Finance	(19.7)
finance lease, Right-of-Use Asset, gross	214.2	$ 165.5
Operating Lease, Payments	8.7	8.9
Finance Lease, Interest Payment on Liability	6.3	3.0
Lease, Cost	36.8	25.1
Operating Lease, Cost	9.0	9.0
Finance Lease, Right-of-Use Asset, Amortization	21.5	13.1
Finance Lease, Interest Expense	6.3	3.0
Finance Lease, Principal Payments	30.1	12.1
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	28.5	2.3
Finance Lease, Right-of-Use Asset, Accumulated Amortization Amount	(45.1)	(23.5)
Finance Lease, Right-of-Use Asset	$ 169.1	$ 142.0
Operating Lease, Weighted Average Remaining Lease Term	42 years 3 months 18 days	10 years 2 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	5 years 6 months	6 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	5.50%	5.60%
Finance Lease, Weighted Average Discount Rate, Percent	4.30%	4.30%
Finance Lease, Liability	$ 156.8
Lessee, Finance Lease, Lease Not Yet Commenced, Commitment	$ 75.9

Finance Lease, Right-of-Use Asset, Accumulated Amortization Amount

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finance lease, Right-of-Use Asset, gross

+ References

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- Definition

Lessee, Finance Lease, Lease Not Yet Commenced, Commitment

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No definition available.

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Lessee Imputed Interest Due- Finance

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No definition available.

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- Definition

Lessee Imputed Interest Due- Operating

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No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

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-Publisher FASB
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- Definition

Amount of interest paid on finance lease liability.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of cash outflow for principal payment on finance lease.

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating 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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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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