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v3.3.1.900

Income Taxes (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
DEFERRED TAX LIABILITIES: |  |  |
Accelerated depreciation | $ 4,429 | $ 4,277 |
Other | 62 | 51 |
Deferred Tax Liabilities, Gross | 4,491 | 4,328 |
Total deferred tax liabilities | 2,490 | 2,782 |
DEFERRED TAX ASSETS: |  |  |
Fuel derivative instruments | 750 | 521 |
Capital and operating leases | 81 | 125 |
Deferred tax assets construction obligation | 289 | 209 |
Accrued engine maintenance | 74 | 83 |
Accrued employee benefits | 541 | 334 |
State taxes | 62 | 65 |
Business partner income | 107 | 90 |
Other | 97 | 119 |
Total deferred tax assets | 2,001 | 1,546 |
CURRENT: |  |  |
Federal | 1,292 | 203 | $ 355
State | 114 | 29 | 44
Total current | 1,406 | 232 | 399
DEFERRED: |  |  |
Federal | (97) | 421 | 62
State | (11) | 27 | (6)
Total deferred | (108) | 448 | 56
Total | 1,298 | 680 | 455
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] |  |  |
Tax at statutory U.S. tax rates | 1,218 | 636 | 423
Nondeductible items | 15 | 9 | 10
State income taxes, net of federal benefit | 66 | 37 | 25
Other, net | $ (1) | $ (2) | $ (3)

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1 -Article 4 + Details
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