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Employee Benefit Plans (Actual & Target Allocation of Fair Value by Asset Class) (Details) - UNITED STATES	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Actual	100.00%	100.00%
Pension Benefits | Fixed maturity securities AFS
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	85.00%
Actual	83.00%	82.00%
Pension Benefits | Equity Securities
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	7.00%
Actual	7.00%	6.00%
Pension Benefits | Alternative Securities
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	8.00%
Actual	10.00%	12.00%
Other Postretirement Benefits
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Actual	100.00%	100.00%
Other Postretirement Benefits | Fixed maturity securities AFS
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	95.00%
Actual	94.00%	94.00%
Other Postretirement Benefits | Equity Securities
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	5.00%
Actual	6.00%	6.00%
Other Postretirement Benefits | Alternative Securities
Actual weighted average asset allocation by major asset class for the Invested Plans [Abstract]
Target	0.00%
Actual	0.00%	0.00%

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- References

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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
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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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
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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