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Restructuring and Other Initiatives (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 227	$ 268
Additions, interest accretion and other	455	40
Payments	(37)	(22)
Revisions to estimates and effect of foreign currency	(12)	10
Balance at end of period	633	296
Asset impairments	484	$ 21
Gunsan Korea Plant [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Pre-tax restructuring costs	900
Asset impairments	464
Termination benefits	436
Gunsan Korea Plant [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Expected costs to be incurred	100
Gunsan Korea Plant [Member] | Employee Severance and Statutory Pension Payments [Member]
Restructuring Reserve [Roll Forward]
Expected costs to be incurred	$ 800

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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost including foreign currency translation adjustments, excluding adjustments for costs incurred during the period and costs settled during the period.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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