Other Assets and Investments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Investment in Sumitomo Rubber Industries, Ltd. (in shares)		3,421,306
Fair value of the Sumitomo Investment		$ 51
Unrealized holding gains on the Sumitomo Investment, gross		35
Unrealized holding gains on the Sumitomo Investment, after-tax		36
Dividends received from consolidated subsidiaries	$ 46	273	$ 88
Dividends received from affiliates accounted for using the equity method	$ 24	$ 24	$ 21
SRI
Schedule of Available-for-sale Securities [Line Items]
Percentage of investment shares sold	100.00%
Pre-tax gain on sale of common stock in SRI	$ 30
Other (Income) Expense \| SRI
Schedule of Available-for-sale Securities [Line Items]
Pre-tax gain on sale of common stock in SRI	$ 30

Available For Sale Securities Gross Unrealized Holding Gains After Tax

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Available-for-sale, Percentage of Interest Sold

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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