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Off-balance sheet financial guarantees written and other commitments.

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percentage of asbestos claim related losses recoverable through insurance.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

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The amount of indemnification assets (amounts to be reimbursed if and when certain assumed liabilities are paid) recognized at the acquisition date of a business combination.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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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.

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

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Amount of receivable related to a loss contingency accrual that is expected to be collected within one year or the normal operating cycle, if longer. For example, an insurance recovery receivable.

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Present value of the accrual for product liability loss contingencies as of the balance sheet date (if the accrual qualifies for discounting).

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Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Commitments and Contingent Liabilities - Narrative (Details) € in Millions, zł in Millions, $ in Millions		9 Months Ended	12 Months Ended
	May 28, 2020 Employee	Sep. 30, 2021 USD ($) Claim Employee	Dec. 31, 2020 USD ($)	Dec. 31, 2020 EUR (€)	Sep. 30, 2021 EUR (€) Claim	Dec. 31, 2019 USD ($)	Dec. 31, 2019 PLN (zł)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 PLN (zł)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Liability for anticipated environmental matters		$ 68	$ 64
Liability for anticipated environment matters, current		19	16
Workers' compensation liability		200	196
Workers' compensation liability, current		35	29
Potential workers' compensation liability in excess of recorded amount		25
Off-balance sheet financial guarantees and other commitments		83	73
Accounts receivable \| Sumitomo Rubber Industries
Loss Contingencies [Line Items]
Indemnification asset		1
Other Assets \| Sumitomo Rubber Industries
Loss Contingencies [Line Items]
Indemnification asset		21
General Product Liability
Loss Contingencies [Line Items]
Product liability and other tort claims liability		397	285
General Product Liability \| Other Current Liabilities
Loss Contingencies [Line Items]
Product liability and other tort claims liability		54	38
Asbestos Related Product Liability
Loss Contingencies [Line Items]
Product liability and other tort claims liability		$ 147	149
Asbestos claims dismissed to date (in claims) \| Claim		155,200			155,200
Accrued asbestos-related liability and gross payments to date		$ 572	563
Product liability contingency, evaluation period		10 years
Asbestos claims receivable		$ 87	90
Expected percentage of asbestos claim related losses recoverable through insurance		60.00%			60.00%
Asbestos claims receivable, current		$ 13	13
Limits of excess insurance policies			550
Amiens Labor Claims
Loss Contingencies [Line Items]
Loss contingency, number of plaintiffs \| Employee	790	850
Contingent loss		$ 162			€ 140
Loss contingency, accrual			$ 30	€ 27
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Guarantee issued						$ 46	zł 181	$ 42	zł 165
Workers' Compensation Claims
Loss Contingencies [Line Items]
Guarantee issued		$ 23								$ 46