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No definition available.

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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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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- Definition

Percentage of actual 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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Postretirement Benefit Plans (Target Allocations) (Details)	Dec. 31, 2019	Dec. 31, 2018
Equity securities
Defined Benefit Plan Disclosure
Actual allocation of plan assets	18.60%	29.70%
Fixed income
Defined Benefit Plan Disclosure
Actual allocation of plan assets	31.70%	24.50%
Hedge funds
Defined Benefit Plan Disclosure
Actual allocation of plan assets	2.00%	11.80%
Private equity
Defined Benefit Plan Disclosure
Actual allocation of plan assets	0.00%	1.10%
Cash and other
Defined Benefit Plan Disclosure
Actual allocation of plan assets	47.70%	32.90%
Minimum \| Equity securities
Defined Benefit Plan Disclosure
Target allocation percentages	15.00%
Minimum \| Fixed income
Defined Benefit Plan Disclosure
Target allocation percentages	10.00%
Minimum \| Hedge funds
Defined Benefit Plan Disclosure
Target allocation percentages	0.00%
Minimum \| Private equity
Defined Benefit Plan Disclosure
Target allocation percentages	0.00%
Minimum \| Cash and other
Defined Benefit Plan Disclosure
Target allocation percentages	0.00%
Maximum \| Equity securities
Defined Benefit Plan Disclosure
Target allocation percentages	60.00%
Maximum \| Fixed income
Defined Benefit Plan Disclosure
Target allocation percentages	50.00%
Maximum \| Hedge funds
Defined Benefit Plan Disclosure
Target allocation percentages	40.00%
Maximum \| Private equity
Defined Benefit Plan Disclosure
Target allocation percentages	30.00%
Maximum \| Cash and other
Defined Benefit Plan Disclosure
Target allocation percentages	60.00%