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Asset Impairments and Unusual Items (Tables) | 12 Months Ended
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Dec. 31, 2016
Unusual or Infrequent Items, or Both [Abstract] |
Components of (Income) Expense from Divestitures, Asset Impairments and Unusual Items | The following table summarizes the major components of (income) expense from divestitures, asset impairments and unusual items for the years ended December 31 (in millions):
|  | 2016 |  |  | 2015 |  |  | 2014 |
(Income) expense from divestitures |  | $ | 9 |  |  | $ | (7 | ) |  | $ | (515 | )
Asset impairments |  |  | 59 |  |  |  | 89 |  |  |  | 355 |
Other |  |  | 44 |  |  |  | — |  |  |  | — |
|  | $ | 112 |  |  | $ | 82 |  |  | $ | (160 | )

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- Definition Tabular disclosure of the nature and financial statement effect of an event or transaction that is unusual in nature or infrequent in occurrence, or both. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64828382&loc=d3e15138-107781 + Details
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