Subsequent Event (Details) - Unsecured Debt - Subsequent Event $ in Billions	Apr. 22, 2020 USD ($)
Subsequent Event [Line Items]
Proceeds from Issuance of Debt	$ 8.0
8.50% Notes due April 21, 2023
Subsequent Event [Line Items]
Proceeds from Issuance of Debt	$ 3.5
Debt Instrument, Term	3 years
Debt Instrument, Interest Rate, Stated Percentage	8.50%
9.00% Notes due April 22, 2025
Subsequent Event [Line Items]
Proceeds from Issuance of Debt	$ 3.5
Debt Instrument, Term	5 years
Debt Instrument, Interest Rate, Stated Percentage	9.00%
9.625% Notes due April 22, 2030
Subsequent Event [Line Items]
Proceeds from Issuance of Debt	$ 1.0
Debt Instrument, Term	10 years
Debt Instrument, Interest Rate, Stated Percentage	9.625%

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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