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Property and Equipment - Textual (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2019	Feb. 29, 2016 renewal_option
Property, Plant and Equipment [Line Items]
Percentage of property and equipment, net pledged to lenders under credit agreement (percent)		70.00%
Financing obligation liability	$ 263.8
Development / Lease Agreement
Property, Plant and Equipment [Line Items]
Lease term			15 years
Number of lease renewal options available | renewal_option			4
Term of lease renewal options			5 years
Increase in Property and equipment, net	55.0
Other Notes Payable | Development / Lease Agreement
Property, Plant and Equipment [Line Items]
Financing obligation liability	54.8
Financing obligation liability, current	$ 0.2

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- Definition

Number of renewal options as part of the development/lease agreement for the new corporate headquarters.

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Percentage of assets pledged to lenders under credit agreement.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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

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Amount of increase (decrease) of long-lived, 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, furniture and fixtures, and computer equipment.

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