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Components of Special Charges (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Operating: |  |  |
Severance and benefit costs | $ 14 | $ 37 |
Impairment of assets | 23 |  |
(Gains) losses on sale of assets and other special charges | 3 | 14 |
Special charges | 40 | 51 | [1]
Income tax benefit related to special charges | (9) | (18) |
Total special charges, net of tax | $ 31 | $ 33 |
[1] | Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) and Accounting Standards Update No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.

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- Definition Amount of gain (loss) on sale of other assets and other miscellaneous charges. + References No definition available. + Details
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- Definition Income tax expense (benefit) special charges. + References No definition available. + Details
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- Definition Total special items in the period. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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- Definition Period expense related to postemployment benefits. + References No definition available. + Details
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- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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