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.

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan expenses	$ 86	$ 82	$ 79
Pension
Defined Benefit Plan Disclosure [Line Items]
Expected company contributions	29
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected company contributions	$ 5
Minimum \| Equity Investments
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	15.00%
Minimum \| Fixed Income Investments
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	75.00%
Minimum \| Other Investment
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	0.00%
Maximum \| Equity Investments
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	25.00%
Maximum \| Fixed Income Investments
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	85.00%
Maximum \| Other Investment
Defined Benefit Plan Disclosure [Line Items]
Target allocation percentage	10.00%