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Statements of Consolidated Stockholder's Equity - USD ($) $ in Millions | Total | United Airlines, Inc. | Common Stock | Additional Capital Invested | Additional Capital Invested United Airlines, Inc. | Treasury Stock | Retained Earnings (Accumulated Deficit) | Retained Earnings (Accumulated Deficit) United Airlines, Inc. | Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) United Airlines, Inc. | Receivable from Related Parties, Net United Airlines, Inc.
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2016 |  |  |  |  | 314,600,000 |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2016 | $ 8,574 |  | $ 8,520 |  | $ 3 | $ 6,569 | $ 3,573 | $ (511) | $ 3,342 |  | $ 5,851 |  | $ (829) | $ (829) | $ (75) |
Net income | 2,143 | [1],[2],[3],[4] | 2,161 | [5],[6],[7],[8] |  |  |  |  | 2,143 | [1] | 2,161 | [8] |  |  |  |
Other comprehensive income | (200) | [2] | (200) | [5] |  |  |  |  |  |  |  |  | (200) | (200) |  |
Dividend to UAL |  |  | (1,844) |  |  |  | (1,844) |  |  |  |  |  |  |  |  |
Stock-settled share-based compensation | 56 |  | 56 |  |  | 56 | 56 |  |  |  |  |  |  |  |  |
Proceeds from exercise of stock options | 2 |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Repurchases of common stock (in shares) |  |  |  |  | (27,800,000) |  |  |  |  |  |  |  |  |  |  |
Repurchases of common stock | (1,844) |  |  |  |  |  |  | (1,844) |  |  |  |  |  |  |  |
Treasury stock retired | 0 |  |  |  |  | (508) |  | 1,576 | (1,068) |  |  |  |  |  |  |
Net treasury stock issued for share-based awards (in shares) |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |
Net treasury stock issued for share-based awards | (12) |  |  |  |  | (21) |  | 10 | (1) |  |  |  |  |  |  |
Excess tax benefits from share-based awards | 14 |  | 14 |  |  |  |  |  | 14 |  | 14 |  |  |  |  |
UAL contribution related to stock plans |  |  | 2 |  |  |  | 2 |  |  |  |  |  |  |  |  |
Reclassification of stranded tax effects | 0 |  | 0 |  |  |  |  |  | 118 |  | 118 |  | (118) | (118) |  |
Other | 55 | [1] | 42 | [8] |  |  |  |  | 55 | [1] | 57 | [8] |  |  | (15) | [8]
Balance (in shares) at Dec. 31, 2017 |  |  |  |  | 287,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2017 | 8,788 |  | 8,751 |  | $ 3 | 6,098 | 1,787 | (769) | 4,603 |  | 8,201 |  | (1,147) | (1,147) | (90) |
Net income | 2,122 | [1],[2],[3],[4] | 2,123 | [5],[6],[7],[8] |  |  |  |  | 2,122 | [1] | 2,123 | [8] |  |  |  |
Other comprehensive income | 338 | [2] | 338 | [5] |  |  |  |  |  |  |  |  | 338 | 338 |  |
Dividend to UAL |  |  | (1,249) |  |  |  | (1,249) |  |  |  |  |  |  |  |  |
Stock-settled share-based compensation | 60 |  | 60 |  |  | 60 | 60 |  |  |  |  |  |  |  |  |
Repurchases of common stock (in shares) |  |  |  |  | (17,500,000) |  |  |  |  |  |  |  |  |  |  |
Repurchases of common stock | (1,250) |  |  |  |  |  |  | (1,250) |  |  |  |  |  |  |  |
Net treasury stock issued for share-based awards (in shares) |  |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |
Net treasury stock issued for share-based awards | $ (16) |  |  |  |  | (38) |  | 26 | (4) |  |  |  |  |  |  |
Other |  |  | $ (19) |  |  |  |  |  |  |  | (5) |  |  | 6 | (20) |
Balance (in shares) at Dec. 31, 2018 | 269,914,769 | [9] | 1,000 | [10] | 269,900,000 |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2018 | $ 10,042 | [9] | $ 10,004 | [10] | $ 3 | 6,120 | 598 | (1,993) | 6,715 |  | 10,319 |  | (803) | (803) | (110) |
Net income | 3,009 |  | 3,011 |  |  |  |  |  | 3,009 |  | 3,011 |  |  |  |  |
Other comprehensive income | 85 |  | 85 |  |  |  |  |  |  |  |  |  | 85 | 85 |  |
Dividend to UAL |  |  | (1,641) |  |  |  | (664) |  |  |  | (977) |  |  |  |  |
Stock-settled share-based compensation | $ 66 |  | 66 |  |  | 66 | 66 |  |  |  |  |  |  |  |  |
Repurchases of common stock (in shares) | (19,200,000) |  |  |  | (19,200,000) |  |  |  |  |  |  |  |  |  |  |
Repurchases of common stock | $ (1,641) |  |  |  |  |  |  | (1,641) |  |  |  |  |  |  |  |
Net treasury stock issued for share-based awards (in shares) |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |
Net treasury stock issued for share-based awards | $ (30) |  |  |  |  | (57) |  | 35 | (8) |  |  |  |  |  |  |
Other |  |  | $ (33) |  |  |  |  |  |  |  |  |  |  |  | (33) |
Balance (in shares) at Dec. 31, 2019 | 251,216,381 |  | 1,000 |  | 251,200,000 |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2019 | $ 11,531 |  | $ 11,492 |  | $ 3 | $ 6,129 | $ 0 | $ (3,599) | $ 9,716 |  | $ 12,353 |  | $ (718) | $ (718) | $ (143) |
[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 II, Item 8
[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 II, Item 8 of this report for additional information.
[3] | 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 II, Item 8 of this report for additional information.
[4] | 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 II, Item 8 of this report for additional information.
[5] | 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 II, Item 8 of this report for additional information.
[6] | 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 II, Item 8 of this report for additional information.
[7] | 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 II, Item 8 of this report for additional information.
[8] | 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 II, Item 8 of this report for additional information.
[9] | 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 II, Item 8 of this report for additional information.
[10] | 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 II, Item 8 of this report for additional information.

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Period Type: | duration