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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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Dissolution of Global Alliance With Sumitomo Rubber Industries (Details) - USD ($) $ in Millions		12 Months Ended
	Oct. 01, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain on asset sales		$ 71	$ 3	$ 8
Decrease (increase) in accumulated other comprehensive loss		(69)	$ (79)	$ (232)
NGY
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest acquired	75.00%
GDTE
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest acquired	25.00%
Decrease (increase) in accumulated other comprehensive loss		(107)
Increase in capital surplus		60
SRI
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net amount paid upon closing transactions	$ 271
Debt instrument, principal amount	$ 56
Promissory note, term	3 years
Proceeds on sale of common stock in SRI		47
Pre-tax gain on sale of common stock in SRI		30
Pre-tax gain on asset sales		48
Net gain on asset sales		38
Pre-tax loss for the difference between liabilities retained and indemnification of those liabilities		28
Decrease (increase) in accumulated other comprehensive loss		77
SRI \| London Interbank Offered Rate (LIBOR)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Promissory note, basis spread on variable rate	0.10%
Accounts receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification asset		6
Other Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification asset		26
GDTNA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Decrease (increase) in accumulated other comprehensive loss		184
Other (Income) Expense \| SRI
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain on sale of common stock in SRI		$ 30
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| GDTNA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity interest prior to dissolution	75.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| DGT
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity interest prior to dissolution	25.00%