Aggregate cash contribution to pension plan.

No definition available.

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- Definition

Cash contribution term to pension plan.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan expected future benefit payments.

+ References

No definition available.

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- Definition

Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt

+ References

No definition available.

+ Details

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- Definition

Payment For Pension Benefit Plan In Excess Of Minimum Required

+ References

No definition available.

+ Details

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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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- References

No definition available.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

+ Details

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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- Definition

Amount of cost for defined contribution plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 70
-Section 50
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- Definition

Amount of cash outflow for pension and other postretirement benefits. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 230
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-Section 45
-Paragraph 25
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- Definition

Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

+ References

+ Details

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- Definition

Amount of prescription drug subsidy receipt expected after fifth fiscal year following current fiscal year.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of prescription drug subsidy receipt expected in next fiscal year following current fiscal year.

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- Definition

Amount of prescription drug subsidy receipt expected in fifth fiscal year following current fiscal year.

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- Definition

Amount of prescription drug subsidy receipt expected in fourth fiscal year following current fiscal year.

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- Definition

Amount of prescription drug subsidy receipt expected in third fiscal year following current fiscal year.

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- Definition

Amount of prescription drug subsidy receipt expected in second fiscal year following current fiscal year.

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Pension and Other Postretirement Benefits - Funding and Cash Flows and Defined Contribution Plans (Details) - USD ($) $ in Millions		1 Months Ended			12 Months Ended
	Nov. 01, 2016	Apr. 30, 2019	Mar. 31, 2018	Apr. 30, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Payment for pension benefits					$ 227	$ 268
Payment for pension benefit plan in excess of minimum required					25	53
Contribution next fiscal year					140
Aggregate cash contribution to pension plan	$ 150
Cash contribution term to pension plan	30 months
Payment for pension and other postretirement benefits		$ 34	$ 66	$ 50
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Expenses related to defined contribution plan					73	$ 87	$ 85
Pension benefits paid
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021					168
2022					169
2023					164
2024					160
2025					158
2026 - 2030					728
Total benefit payments					1,547
Gross Other post- retirement benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021					17
2022					16
2023					16
2024					15
2025					15
2026 - 2030					67
Total benefit payments					146
Less Medicare Part D subsidy receipts
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021					1
2022					1
2023					1
2024					1
2025					1
2026 - 2030					6
Less Medicare Part D subsidy receipts					11
Net Other post- retirement benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021					16
2022					15
2023					15
2024					14
2025					14
2026 - 2030					61
Total benefit payments					135
United States
Defined Benefit Plan Disclosure [Line Items]
Contribution next fiscal year					$ 130