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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Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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- Debt (Details) - USD ($)	Jun. 30, 2019	Jan. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term debt	$ 4,909,875,000		$ 4,719,125,000
Less: Unamortized discount and debt issuance costs	(57,351,000)		(52,176,000)
Long-term debt, net	4,852,524,000		4,666,949,000
Senior secured term loan A facility \| Term Loan
Debt Instrument [Line Items]
Principal amount	470,000,000
Senior secured term loan	$ 470,000,000		470,000,000
Interest rate	4.15%
Senior secured term loan B facility \| Term Loan
Debt Instrument [Line Items]
Principal amount	$ 1,800,000,000
Senior secured term loan	1,789,875,000		1,799,125,000
Senior secured revolving credit facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility	$ 0		550,000,000
Interest rate	4.40%
5.625% Senior Notes Due 2024 [Member] \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 1,050,000,000
Senior notes	$ 1,050,000,000		1,050,000,000
Interest rate	5.625%
4.50% senior notes, due 2026 \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 500,000,000
Senior notes	$ 500,000,000		500,000,000
Interest rate	4.50%
5.75% senior notes due 2027 \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 750,000,000
Senior notes	$ 750,000,000		0
Interest rate	5.75%
4.50% senior notes, due 2028 \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 350,000,000
Senior notes	$ 350,000,000		$ 350,000,000
Interest rate	4.50%
Operating Partnership Senior Notes \| 5.75% senior notes due 2027
Debt Instrument [Line Items]
Senior notes		$ 750,000,000
Interest rate		5.75%