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v3.20.4

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Treasury Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2017 |  | 418 | (97) |  |  |
Beginning balance at Dec. 31, 2017 | $ 4,805 | $ 4 | $ (890) | $ 2,127 | $ 3,564 | $ 0
Net (loss) income | 189 |  |  |  | 189 |
Other comprehensive income (loss) | (3) |  |  |  |  | (3)
Vesting of restricted stock units (in shares) |  | 1 |  |  |  |
Vesting of restricted stock units | 7 |  | $ (7) |  |  |
Stock compensation expense | 28 |  |  | 28 |  |
Stock issued under crewmember stock purchase plan (in shares) |  | 3 |  |  |  |
Shares issued under Crewmember Stock Purchase Plan | 48 |  |  | 48 |  |
Shares repurchased (in shares) |  |  | 19 |  |  |
Shares repurchased | (375) |  | $ (375) | 0 |  |
Ending balance at Dec. 31, 2018 | 4,685 | $ 4 | $ (1,272) | 2,203 | 3,753 | (3)
Ending balance (in shares) at Dec. 31, 2018 |  | 422 | (116) |  |  |
Net (loss) income | 569 |  |  |  | 569 |
Other comprehensive income (loss) | 5 |  |  |  |  | 5
Vesting of restricted stock units (in shares) |  | 2 |  |  |  |
Vesting of restricted stock units | 6 |  | $ (6) |  |  |
Stock compensation expense | 31 |  |  | 31 |  |
Stock issued under crewmember stock purchase plan (in shares) |  | 3 |  |  |  |
Shares issued under Crewmember Stock Purchase Plan | 51 |  |  | 51 |  |
Shares repurchased (in shares) |  |  | 29 |  |  |
Shares repurchased | (536) |  | $ (504) | (32) |  |
Ending balance at Dec. 31, 2019 | 4,799 | $ 4 | $ (1,782) | 2,253 | 4,322 | 2
Ending balance (in shares) at Dec. 31, 2019 |  | 427 | (145) |  |  |
Net (loss) income | (1,354) |  |  |  | (1,354) |
Other comprehensive income (loss) | (2) |  |  |  |  | (2)
Vesting of restricted stock units (in shares) |  | 1 |  |  |  |
Vesting of restricted stock units | 7 |  | $ (7) |  |  |
Stock compensation expense | 28 |  |  | 28 |  |
Stock issued under crewmember stock purchase plan (in shares) |  | 4 |  |  |  |
Shares issued under Crewmember Stock Purchase Plan | 35 |  |  | 35 |  |
Shares repurchased (in shares) |  |  | 13 |  |  |
Shares repurchased | (160) |  | $ (192) | 32 |  |
CARES Act warrant issuance | 28 |  |  | 28 |  |
Shares issued under common stock offering (in shares) |  | 42 |  |  |  |
Shares issued under common stock offering | 584 | $ 1 |  | 583 |  |
Ending balance at Dec. 31, 2020 | $ 3,951 | $ 5 | $ (1,981) | $ 2,959 | $ 2,968 | $ 0
Ending balance (in shares) at Dec. 31, 2020 |  | 474 | (158) |  |  |

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http://asc.fasb.org/extlink&oid=108774443&loc=SL4568740-111683 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 65 -Paragraph 15 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=120409616&loc=SL4590271-111686 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 45 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929471&loc=d3e21711-107793 Reference 15: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4568447-111683 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 65 -Paragraph 15 -Subparagraph (f)(1) -URI 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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant