Aggregate of the current and noncurrent amounts estimated to be received from General Motors Company (GM) associated with an agreement between us and GM to share proportionally in the cost of other postretirement employee benefits for eligible retirees based on the length of service an employee had with us and GM.

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Paragraph 42
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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.

+ References

No definition available.

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- Definition

Fair value of account receivable subject to concentration of credit or market risk or both.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
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Derivatives and Risk Management - Sales, Receivables and Postretirement Cost Sharing Asset by Major Customer Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue, Major Customer [Line Items]
Total GM postretirement cost sharing asset	$ 120.4	$ 120.0
General Motors [Member]
Revenue, Major Customer [Line Items]
Fair value, concentration of risk, accounts receivable	$ 334.2	$ 305.7
General Motors [Member] \| Customer Concentration Risk \| Revenue Benchmark
Revenue, Major Customer [Line Items]
Entity-wide revenue, major customer, percentage	42.00%	39.00%	40.00%
Stellantis [Member]
Revenue, Major Customer [Line Items]
Fair value, concentration of risk, accounts receivable	$ 97.2	$ 108.1
Stellantis [Member] \| Customer Concentration Risk \| Revenue Benchmark
Revenue, Major Customer [Line Items]
Entity-wide revenue, major customer, percentage	13.00%	16.00%	18.00%
Ford [Member]
Revenue, Major Customer [Line Items]
Fair value, concentration of risk, accounts receivable	$ 95.5	$ 118.1
Ford [Member] \| Customer Concentration Risk \| Revenue Benchmark
Revenue, Major Customer [Line Items]
Entity-wide revenue, major customer, percentage	13.00%	12.00%	12.00%