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Pension and Other Postretirement Benefits - Pension plan assets by category and FV (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fixed income index - Long government bond
Plan assets
Redemption notification period	95 days
Pension Plan | UNITED STATES
Plan assets
Fair value of plan assets	$ 420	$ 439	$ 408
Pension Plan | UNITED STATES | Equity index - U.S.
Plan assets
Fair value of plan assets	37	45
Pension Plan | UNITED STATES | Equity index - International
Plan assets
Fair value of plan assets	22	44
Pension Plan | UNITED STATES | Fixed income index- Long bond
Plan assets
Fair value of plan assets	$ 179	$ 276
Pension Plan | UNITED STATES | Fixed income index- Long bond | Minimum
Plan assets
Fixed income securities maturity (in years)	10 years	10 years
Pension Plan | UNITED STATES | Fixed income index - Long government bond
Plan assets
Fair value of plan assets	$ 109	$ 69
Pension Plan | UNITED STATES | Fixed income index - Long government bond | Minimum
Plan assets
Fixed income securities maturity (in years)	10 years	10 years
Pension Plan | UNITED STATES | Other.
Plan assets
Fair value of plan assets	$ 69
Pension Plan | UNITED STATES | Cash
Plan assets
Fair value of plan assets	4	$ 5
Pension Plan | UNITED STATES | NAV
Plan assets
Fair value of plan assets	69
Pension Plan | UNITED STATES | NAV | Other.
Plan assets
Fair value of plan assets	69
Pension Plan | UNITED STATES | Level 2
Plan assets
Fair value of plan assets	351	439
Pension Plan | UNITED STATES | Level 2 | Equity index - U.S.
Plan assets
Fair value of plan assets	37	45
Pension Plan | UNITED STATES | Level 2 | Equity index - International
Plan assets
Fair value of plan assets	22	44
Pension Plan | UNITED STATES | Level 2 | Fixed income index- Long bond
Plan assets
Fair value of plan assets	179	276
Pension Plan | UNITED STATES | Level 2 | Fixed income index - Long government bond
Plan assets
Fair value of plan assets	109	69
Pension Plan | UNITED STATES | Level 2 | Cash
Plan assets
Fair value of plan assets	4	5
Pension Plan | Non-US
Plan assets
Fair value of plan assets	244	249	$ 231
Pension Plan | Non-US | Equity index - U.S.
Plan assets
Fair value of plan assets	26	26
Pension Plan | Non-US | Equity index - International
Plan assets
Fair value of plan assets	17	19
Pension Plan | Non-US | Fixed income index- Short bond
Plan assets
Fair value of plan assets	34	31
Pension Plan | Non-US | Fixed income index - Intermediate bond
Plan assets
Fair value of plan assets	45	38
Pension Plan | Non-US | Fixed income index- Long bond
Plan assets
Fair value of plan assets	93	106
Pension Plan | Non-US | Other.
Plan assets
Fair value of plan assets	21	26
Pension Plan | Non-US | Cash
Plan assets
Fair value of plan assets	8	3
Pension Plan | Non-US | Level 1
Plan assets
Fair value of plan assets	8	3
Pension Plan | Non-US | Level 1 | Cash
Plan assets
Fair value of plan assets	8	3
Pension Plan | Non-US | Level 2
Plan assets
Fair value of plan assets	236	246
Pension Plan | Non-US | Level 2 | Equity index - U.S.
Plan assets
Fair value of plan assets	26	26
Pension Plan | Non-US | Level 2 | Equity index - International
Plan assets
Fair value of plan assets	17	19
Pension Plan | Non-US | Level 2 | Fixed income index- Short bond
Plan assets
Fair value of plan assets	34	31
Pension Plan | Non-US | Level 2 | Fixed income index - Intermediate bond
Plan assets
Fair value of plan assets	45	38
Pension Plan | Non-US | Level 2 | Fixed income index- Long bond
Plan assets
Fair value of plan assets	93	106
Pension Plan | Non-US | Level 2 | Other.
Plan assets
Fair value of plan assets	$ 21	$ 26

X

- Definition

Redemption notification period of plan assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

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+ References

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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
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-SubTopic 20
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