XML 17 R59.htm IDEA: XBRL DOCUMENT
v3.19.3

Debt - Details of Pass Through Trusts (Details) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Debt Instrument [Line Items] |  |  |
Proceeds received from issuance of debt | $ 1,109,000,000 | $ 1,241,000,000 | [1]
United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Proceeds received from issuance of debt | 1,109,000,000 | $ 1,241,000,000 | [2]
Pass-Through Certificates | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | 2,234,000,000 |  |
Proceeds received from issuance of debt | 1,052,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 1,182,000,000 |  |
Pass-Through Certificates | Class AA Pass-Through Certificates Issued September 2019 | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | $ 702,000,000 |  |
Stated interest rate | 2.70% |  |
Total debt recorded | $ 76,000,000 |  |
Proceeds received from issuance of debt | 76,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 626,000,000 |  |
Pass-Through Certificates | Class A Pass-Through Certificates Issued September 2019 | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | $ 287,000,000 |  |
Stated interest rate | 2.90% |  |
Total debt recorded | $ 31,000,000 |  |
Proceeds received from issuance of debt | 31,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 256,000,000 |  |
Pass-Through Certificates | Class B Pass-Through Certificates Issued September 2019 | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | $ 232,000,000 |  |
Stated interest rate | 3.50% |  |
Total debt recorded | $ 25,000,000 |  |
Proceeds received from issuance of debt | 25,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 207,000,000 |  |
Pass-Through Certificates | Class AA Pass-Through Certificates Issued February 2019 | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | $ 717,000,000 |  |
Stated interest rate | 4.15% |  |
Total debt recorded | $ 651,000,000 |  |
Proceeds received from issuance of debt | 651,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 66,000,000 |  |
Pass-Through Certificates | Class A Pass-Through Certificates Issued February 2019 | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount | $ 296,000,000 |  |
Stated interest rate | 4.55% |  |
Total debt recorded | $ 269,000,000 |  |
Proceeds received from issuance of debt | 269,000,000 |  |
Remaining proceeds from issuance of certificates to be received in future periods | 27,000,000 |  |
Enhanced Equipment Trust Certificate [Member] | United Airlines, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Total debt recorded | $ 1,052,000,000 |  |
[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.
[2] | 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 Amount of borrowing capacity currently available under the debt instrument (initial borrowing capacity less the amount of proceeds received). + References No definition available. + Details
Name: | ual_RemainingProceedsFromBorrowings
Namespace Prefix: | ual_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=ual_UnitedAirLinesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=ual_PassThroughCertificatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ual_ClassAAPassThroughCertificatesIssuedSeptember2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ual_ClassAPassThroughCertificatesIssuedSeptember2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ual_ClassBPassThroughCertificatesIssuedSeptember2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ual_ClassAAPassThroughCertificatesIssuedFebruary2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ual_ClassAPassThroughCertificatesIssuedFebruary2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_EnhancedEquipmentTrustCertificateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |