v3.20.1

Debt (Fair Value of Debt) (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		$ 10,259	$ 11,857
Senior Unsecured Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		3,041	3,663
First Lien Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		3,161	3,167
First Lien Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		2,407	2,835
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		10,923	11,571
Reported Value Measurement [Member] | Senior Unsecured Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		3,041	3,663
Reported Value Measurement [Member] | First Lien Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		3,161	3,167
Reported Value Measurement [Member] | First Lien Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		2,407	2,835
Reported Value Measurement [Member] | Project financing, notes payable and other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	778	817
Reported Value Measurement [Member] | CCFC Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		964	967
Reported Value Measurement [Member] | Revolving facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		572	122
Level 2 | Senior Unsecured Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		2,827	3,764
Level 2 | First Lien Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		2,920	3,238
Level 2 | First Lien Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		2,313	2,929
Level 2 | CCFC Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		850	982
Level 3 | Project financing, notes payable and other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	777	822
Level 3 | Revolving facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		$ 572	$ 122
[1] Excludes an agreement that is accounted for as a failed sale-leaseback transaction under U.S. GAAP.

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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.

+ References

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: 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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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