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No definition available.

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- Definition

Debt Issuance Cost Incurred

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No definition available.

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- Definition

Percentage of Principle Amount Notes Were Sold At

+ References

No definition available.

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- Definition

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

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- Definition

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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No definition available.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt Obligations - Senior Unsecured Notes (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 07, 2019	Aug. 21, 2019	Dec. 31, 2018	Dec. 19, 2013	Dec. 18, 2012	Sep. 17, 2012
Debt Instrument [Line Items]
Write off of Deferred Debt Issuance Cost	$ 1,000,000
5.00% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term Debt							$ 600,000,000
Debt stated interest rate	5.00%			5.00%			5.00%
Debt percentage of principle amount notes were sold at							100.00%
4.625% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term Debt						$ 500,000,000
Debt stated interest rate	4.625%			4.625%		4.625%
Debt percentage of principle amount notes were sold at		100.00%
5.875% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term Debt					$ 400,000,000
Debt stated interest rate	5.875%			5.875%	5.875%
Debt percentage of principle amount notes were sold at					100.00%
6.375% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term Debt					$ 700,000,000
Debt stated interest rate	6.375%			6.375%	6.375%
Debt percentage of principle amount notes were sold at					100.00%
5.750% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 500,000,000
Debt stated interest rate	5.75%		5.75%
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%
Debt percentage of principle amount notes were sold at			100.00%
6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt stated interest rate	6.125%		6.125%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Issuance Cost Incurred	$ 15,000,000
Twelve month period commencing on September 1, 2022 [Member] \| 5.750% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	102.875%
Twelve month period commencing on September 1, 2023 [Member] \| 5.750% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	101.438%
Twelve month period commencing on September 1, 2024 [Member] \| 5.750% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%
Twelve month period commencing on September 1, 2024 [Member] \| 6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	103.063%
Twelve Month Period Commencing September 1, 2025 [Member] \| 6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	102.042%
Twelve month period commencing on September 1, 2026 [Member] \| 6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	101.021%
Twelve month period commencing on September 1, 2027 [Member] \| 6.125% Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Price As Percentage of Principle Amount	100.00%