Pension, Other Postretirement Benefits and Savings Plans - Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts (Details) - Foreign Plan [Member] - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts Classified as Level 3
Beginning balance	$ 185
Ending balance	650	$ 185
Pension Plan [Member]
Defined Benefit Plan, Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts Classified as Level 3
Beginning balance	3,041	2,740
Foreign currency translation	(62)	99
Ending balance	3,272	3,041
Pension Plan [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts Classified as Level 3
Beginning balance	29
Ending balance	25	29
Pension Plan [Member] \| Fair Value, Inputs, Level 3 [Member] \| Defined Benefit Plan Alternatives Insurance Contracts [Member]
Defined Benefit Plan, Changes in Fair Value of Non-U.S. Pension Plan Insurance Contracts Classified as Level 3
Beginning balance	28	22
Unrealized gains relating to instruments still held at the reporting date	(1)	3
Purchases, sales, issuances and settlements (net)	0	1
Foreign currency translation	(2)	2
Ending balance	$ 25	$ 28

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ 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 (d)(iv)(01)
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

+ References

+ Details

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- Definition

Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment.

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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