Costs Associated with Rationalization Programs - Narrative (Details) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2025 USD ($) employee	Jun. 30, 2025 USD ($) employee	Mar. 31, 2025 USD ($) employee	Dec. 31, 2025 USD ($) employee	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Charges				$ 211	$ 131	$ 510
Restructuring reserve	$ 195			195	397	534	$ 117
Rationalizations				194	86	502
Other current liabilities	1,259			1,259	1,089
Rationalization charges to date	950			950
Future rationalization charges expected	100			$ 100
Expected number of position to be released (in employees) | employee				1,000
Number of associates released | employee				1,750
Amiens Labor Claims
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	5			$ 5
Europe, Middle East, and Africa Restructuring Plan - Operating Efficiency
Restructuring Cost and Reserve [Line Items]
Rationalizations				13
Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				$ 71	51	29
Expected number of position to be released (in employees) | employee				1,800
Prior Year Plans | Americas
Restructuring Cost and Reserve [Line Items]
Rationalizations				$ 4	4
Prior Year Plans | Costa Rica
Restructuring Cost and Reserve [Line Items]
Rationalizations				3
Prior Year Plans | EMEA
Restructuring Cost and Reserve [Line Items]
Rationalizations					3
Prior Year Plans | SOUTH AFRICA
Restructuring Cost and Reserve [Line Items]
Rationalizations						2
Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				$ 123	35	473
Expected number of position to be released (in employees) | employee				2,200
Selling Administrative and General Expense | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				$ 4	3
Associate- Related Costs
Restructuring Cost and Reserve [Line Items]
Charges				135	66	453
Restructuring reserve	194			194	396	518	$ 115
Other current liabilities	193			193	296
Associate- Related Costs | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				8	(9)	(5)
Associate- Related Costs | Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				106	30	449
Fulda And Furstenwalde | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				61	52
Fulda
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	102			102
Fulda | Europe, Middle East, and Africa Restructuring Plan - Operating Efficiency
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	41			41
Europe, Middle East, and Africa Restructuring Plan - Manufacturing Employee Severance and Operating Efficiency | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				9
Melksham | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				5	11	16
Reversals Charges | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations				20	45	8
Europe Middle East and Africa Restructuring Plan Manufacturing Employee Severance and Operating Efficiency | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations					15
Gadsden | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations					$ 3	6
Cooper Tire | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations						9
Discontinued Operation In Russia | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations						$ 2
December 2025
Restructuring Cost and Reserve [Line Items]
Estimated total pre-tax charges	17
Accrued expenses related to plans	$ 10			$ 10
December 2025 | Employee Severance
Restructuring Cost and Reserve [Line Items]
Number of job reduction | employee	300			300
June 2025
Restructuring Cost and Reserve [Line Items]
Accrued expenses related to plans	$ 4			$ 4
June 2025 | Minimum
Restructuring Cost and Reserve [Line Items]
Charges		$ 100
June 2025 | Maximum
Restructuring Cost and Reserve [Line Items]
Charges		$ 110
June 2025 | Employee Severance
Restructuring Cost and Reserve [Line Items]
Number of job reduction | employee		900
June 2025 | Associate- Related Costs | Minimum
Restructuring Cost and Reserve [Line Items]
Charges		$ 45
June 2025 | Associate- Related Costs | Maximum
Restructuring Cost and Reserve [Line Items]
Charges		$ 55
March 2025
Restructuring Cost and Reserve [Line Items]
Estimated total pre-tax charges			$ 6
Accrued expenses related to plans	13			13
March 2025 | Selling Administrative and General Expense
Restructuring Cost and Reserve [Line Items]
Number of job reduction | employee			80
Accrued expenses related to plans	$ 1			$ 1
March 2025 | Minimum
Restructuring Cost and Reserve [Line Items]
Estimated total pre-tax charges			$ 150
March 2025 | Maximum
Restructuring Cost and Reserve [Line Items]
Estimated total pre-tax charges			$ 160
March 2025 | Employee Severance
Restructuring Cost and Reserve [Line Items]
Number of job reduction | employee			950
March 2025 | Associate- Related Costs | Minimum
Restructuring Cost and Reserve [Line Items]
Charges			$ 70
March 2025 | Associate- Related Costs | Maximum
Restructuring Cost and Reserve [Line Items]
Charges			$ 80