The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Lease Accounting - Lessor, Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Depreciation		$ 198.8	$ 153.9	$ 116.0
Minimum
Lessee, Lease, Description [Line Items]
Remaining term	1 year	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining term	12 years	12 years
Equipment Leased to Other Party
Lessee, Lease, Description [Line Items]
Land and buildings and improvements, gross value	$ 854.2	$ 854.2	786.4
Land and buildings and improvements, net value	615.7	$ 615.7	600.1
Depreciation	$ 29.5		$ 23.1