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Components of Special Items (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Operating: |  |
Severance and benefit costs | $ 37 | $ 8
Labor agreement costs |  | 100
Cleveland airport lease restructuring |  | 74
(Gains) losses on sale of assets and other special charges | 14 | 8
Special charges | 51 | 190
Nonoperating: |  |
Foreign currency loss |  | 8
Special items before income taxes | 51 | 198
Income tax benefit related to special items | (18) | (72)
Total special items, net of tax | $ 33 | $ 126

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- Definition Amount of gain (loss) on sale or disposal of other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + 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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