Commitments and Contingencies - Summary of Material Contractual Obligations and Commercial Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Jul. 09, 2020
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	$ 189
Contractual Obligation, Less than 1 year	46
Contractual Obligation, 1 to 3 years	85
Contractual Obligation, 3 to 5 years	57
Contractual Obligation, More than 5 years	$ 1
7.000% senior notes due July 15, 2025
Commitment And Contingencies [Line Items]
Debt instrument, interest rate	7.00%	7.00%
Standby Letters of Credit
Commitment And Contingencies [Line Items]
Letters of credit outstanding amount	$ 3
Expected Interest Payments on Senior Notes
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	161
Contractual Obligation, Less than 1 year	35
Contractual Obligation, 1 to 3 years	71
Contractual Obligation, 3 to 5 years	55
Purchase obligations and other
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	19
Contractual Obligation, Less than 1 year	8
Contractual Obligation, 1 to 3 years	9
Contractual Obligation, 3 to 5 years	1
Contractual Obligation, More than 5 years	1
Expected Commitment Fee Payments on 2015 Credit Facility
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	9
Contractual Obligation, Less than 1 year	3
Contractual Obligation, 1 to 3 years	5
Contractual Obligation, 3 to 5 years	$ 1

Commitment and contingencies.

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

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Amount of contractual obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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Amount of contractual obligation to be paid in fourth and fifth fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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- Definition

Amount of contractual obligation to be paid in second and third fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- 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=120391452&loc=d3e13212-122682

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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