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Pensions Benefit Plans and Other Postretirement Benefits - U.S. Plan Assets By Hierarchy (Details) - Pension Benefit Plans - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Minimum
Defined Benefit Plan Disclosure
Percentage of pension plan assets	10.00%
U.S.
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 1,215	$ 1,094	$ 1,394
U.S. | Equity securities
Defined Benefit Plan Disclosure
Percentage of pension plan assets	65.00%
U.S. | Debt securities
Defined Benefit Plan Disclosure
Percentage of pension plan assets	28.00%
U.S. | Real estate and other
Defined Benefit Plan Disclosure
Percentage of pension plan assets	7.00%
Non-U.S.
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 947	843	$ 975
Investments measured at net asset value	858	763
Non-U.S. | Cash and cash equivalents
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 8	9
Non-U.S. | Equity securities
Defined Benefit Plan Disclosure
Percentage of pension plan assets	12.00%
Non-U.S. | Debt securities
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 58	41
Percentage of pension plan assets	62.00%
Non-U.S. | Other
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 23	30
Non-U.S. | Real estate and other
Defined Benefit Plan Disclosure
Percentage of pension plan assets	26.00%
Non-U.S. | Level 1
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 63	43
Non-U.S. | Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure
Plan assets at fair value	8	9
Non-U.S. | Level 1 | Debt securities
Defined Benefit Plan Disclosure
Plan assets at fair value	55	34
Non-U.S. | Level 2
Defined Benefit Plan Disclosure
Plan assets at fair value	26	37
Non-U.S. | Level 2 | Debt securities
Defined Benefit Plan Disclosure
Plan assets at fair value	3	7
Non-U.S. | Level 2 | Other
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 23	$ 30

X

- Definition

Net asset value of investments, that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

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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
-Topic 715
-SubTopic 20
-Section 50
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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

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