Long-Term Debt - Maturities of Debt (Details) $ in Millions	Dec. 31, 2020 USD ($)
Debt Disclosure [Abstract]
2021	$ 14
2022	14
2023	15
2024	916
2025	817
2026 and thereafter	8,605
Long-term debt, gross	$ 10,381

Long-term Debt And Financing Lease Obligations, Maturities, Repayments of Principal in Year Five

No definition available.

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- Definition

Long-Term Debt And Financing Lease Obligations, Maturities, Repayments of Principal In Year Four

+ References

No definition available.

+ Details

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- Definition

Long-Term Debt And Financing Lease Obligations, Maturities, Repayments Of Principal in Year One

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No definition available.

+ Details

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- Definition

Long-Term Debt And Financing Lease Obligations, Maturities, Repayments Of Principal In Year Two

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No definition available.

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- Definition

Long-Term Debt And Financing Lease Obligations, Maturities, Repayments Of Principal, Year Five And Thereafter

+ References

No definition available.

+ Details

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- Definition

Long-term Debt and Financing Lease Obligations, Maturities, Repayments of Principal in Year Three

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No definition available.

+ Details

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- References

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&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(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: 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=120391452&loc=d3e13212-122682

Reference 4: 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=120398452&loc=d3e534808-122878

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