XML 75 R61.htm IDEA: XBRL DOCUMENT
v3.19.2

Special Charges and Mark-to-Market ("MTM") Adjustments - Components of Special Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Operating: |  |  |  |  |  |
Impairment of assets | $ 61 | $ 111 |  | $ 69 | $ 134 |
Severance and benefit costs | 6 | 11 |  | 12 | 25 |
(Gains) losses on sale of assets and other special charges | 4 | 7 |  | 8 | 10 |
Total operating special charges | 71 | 129 | [1] | 89 | 169 | [1]
Nonoperating MTM (gains) losses on financial instruments | (34) | 135 |  | (51) | 90 |
Total special charges and MTM (gains) losses on financial instruments | 37 | 264 |  | 38 | 259 |
Income tax benefit | (8) | (59) |  | (8) | (58) |
Total special charges and MTM (gains) losses on financial instruments, net of income tax | $ 29 | $ 205 |  | $ 30 | $ 201 |
[1] | Amounts adjusted due to the adoption of Accounting Standards Update No. 2016-02, Leases (Topic 842). See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.

X
- Definition Gain (Loss) On Financial Instruments, Non-Operating + References No definition available. + Details
Name: | ual_GainLossOnFinancialInstrumentsNonOperating
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) on sale of other assets and other miscellaneous charges. + References No definition available. + Details
Name: | ual_GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Income tax expense (benefit) special charges. + References No definition available. + Details
Name: | ual_IncomeTaxExpenseBenefitSpecialCharges
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Special Charges And Losses On Financial Instruments, Nonoperating, Before Tax + References No definition available. + Details
Name: | ual_SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total special items in the period. + References No definition available. + Details
Name: | ual_SpecialItemsNetOfIncomeTaxBenefits
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period expense related to postemployment benefits. + References No definition available. + Details
Name: | us-gaap_PostemploymentBenefitsPeriodExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_RestructuringSettlementAndImpairmentProvisions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration