XML 73 R25.htm IDEA: XBRL DOCUMENT
v3.22.0.1

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Revenue from Contracts with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | Passenger revenue recognized in the consolidated statements of operations (in millions):
| Twelve Months Ended December 31,
| 2021 |  | 2020 |  | 2019
Passenger ticket revenue, including ticket breakage and net of taxes and fees | $ | 4,533 |  |  | $ | 2,428 |  |  | $ | 6,824 |
Passenger ancillary revenue | 327 |  |  | 245 |  |  | 567 |
Mileage Plan passenger revenue | 639 |  |  | 346 |  |  | 704 |
Total Passenger revenue | $ | 5,499 |  |  | $ | 3,019 |  |  | $ | 8,095 |
Mileage Plan revenue included in the consolidated statements of operations (in millions):
| Twelve Months Ended December 31,
| 2021 |  | 2020 |  | 2019
Passenger revenue | $ | 639 |  |  | $ | 346 |  |  | $ | 704 |
Mileage Plan other revenue | 461 |  |  | 374 |  |  | 465 |
Total Mileage Plan revenue | $ | 1,100 |  |  | $ | 720 |  |  | $ | 1,169 |
Cargo and other revenue included in the consolidated statements of operations (in millions):
| Twelve Months Ended December 31,
| 2021 |  | 2020 |  | 2019
Cargo revenue | $ | 124 |  |  | $ | 112 |  |  | $ | 133 |
Other revenue | 92 |  |  | 61 |  |  | 88 |
Total Cargo and other revenue | $ | 216 |  |  | $ | 173 |  |  | $ | 221 |
Contract with Customer, Asset and Liability [Table Text Block] | The table below presents a roll forward of the total frequent flyer liability (in millions):
| Twelve Months Ended December 31,
| 2021 |  | 2020
Total Deferred Revenue balance at January 1 | $ | 2,277 |  |  | $ | 1,990 |
Travel miles and companion certificate redemption - Passenger revenue | (639) |  |  | (346) |
Miles redeemed on partner airlines - Other revenue | (43) |  |  | (23) |
Increase in liability for mileage credits issued | 763 |  |  | 656 |
Total Deferred Revenue balance at December 31 | $ | 2,358 |  |  | $ | 2,277 |

X
- Definition Revenue from Contracts with Customer [Abstract] + References No definition available. + Details
Name: | alk_RevenuefromContractswithCustomerAbstract
Namespace Prefix: | alk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration