Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Amount of assets pledged to secure a debt instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Debt - Narrative (Details) - USD ($)	6 Months Ended
Debt - Narrative (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019	Oct. 31, 2019
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,953,700,000	$ 1,665,000,000
Term Loan - DRG Acquisition
Debt Instrument [Line Items]
Aggregate principal amount		360,000,000
Bridge Facility - DRG Acquisition
Debt Instrument [Line Items]
Borrowing capacity			$ 950,000,000
Senior Unsecured Note
Debt Instrument [Line Items]
Collateralized amount	9,646,000
Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of lines of credit	$ 65,000,000
Commitment fee	0.50%
Collateralized amount	$ 4,937,000
Letter of credit
Debt Instrument [Line Items]
Collateralized amount	37,000
Level 2
Debt Instrument [Line Items]
Long-term debt, fair value	$ 1,915,906,000	$ 1,692,750,000