Debt (Settled) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Debt
Aggregate principal amount of debt retired	$ 1,380	$ 18
Aggregate cash payment	1,402	18
Aggregate net loss	(32)
Repayments of debt	$ 1,564	165
5.52% Senior Secured Notes due May 2022
Debt
Aggregate principal amount of debt retired		$ 18
Debt instrument interest rate stated percentage	5.52%
5.375% Senior Secured Notes due May 2023
Debt
Aggregate principal amount of debt retired	$ 243
Debt instrument interest rate stated percentage	5.375%
5.875% Senior Secured Notes due January 2024
Debt
Aggregate principal amount of debt retired	$ 311
Debt instrument interest rate stated percentage	5.875%
7.75% Senior Secured Notes due October 2024
Debt
Aggregate principal amount of debt retired	$ 240
Debt instrument interest rate stated percentage	7.75%
6.25% Senior Secured Notes due December 2024
Debt
Aggregate principal amount of debt retired	$ 250
Debt instrument interest rate stated percentage	6.25%
6.125% Senior Secured Notes due August 2025
Debt
Aggregate principal amount of debt retired	$ 336
Debt instrument interest rate stated percentage	6.125%

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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

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Gross amount of debt extinguished.

+ References

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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