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Stockholders' Equity | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Stockholders' Equity | Stockholders’ Equity Common Stock Common Stock is reported net of shares held by our consolidated subsidiaries (Treasury Shares). Treasury Shares at December 31, 2020 and 2019 amounted to 20,320,777, with a cost of $19 million at both dates. Accumulated Other Comprehensive Loss The components of “Other comprehensive income (loss)” reported in the Consolidated Statements of Comprehensive Income and changes in the cumulative balances of “Accumulated other comprehensive loss” reported in the Consolidated Balance Sheets consisted of the following:
| Balance at Beginning of Year |  | Net Income (Loss) |  |  |  | Reclassification Adjustments |  | Balance at End of Year
| ($ in millions)
Year ended December 31, 2020 |  |  |  |  |  |  |  |  |
Pensions and other postretirement liabilities | $ | (421) |  |  | $ | (125) |  |  |  |  | $ | 20 |  |  | $ | (526) |
Other comprehensive income of equity investees | (70) |  |  | 2 |  |  |  |  | — |  |  | (68) |
Accumulated other comprehensive loss | $ | (491) |  |  | $ | (123) |  |  |  |  | $ | 20 |  |  | $ | (594) |
Year ended December 31, 2019 |  |  |  |  |  |  |  |  |
Pensions and other postretirement liabilities | $ | (497) |  |  | $ | 61 |  |  |  |  | $ | 15 |  |  | $ | (421) |
Other comprehensive loss of equity investees | (66) |  |  | (4) |  |  |  |  | — |  |  | (70) |
Accumulated other comprehensive loss | $ | (563) |  |  | $ | 57 |  |  |  |  | $ | 15 |  |  | $ | (491) |
Other Comprehensive Income (Loss) “Other comprehensive income (loss)” reported in the Consolidated Statements of Comprehensive Income consisted of the following:
| Pretax Amount |  | Tax (Expense) Benefit |  | Net-of-Tax Amount
| ($ in millions)
Year ended December 31, 2020 |  |  |  |  |
Net loss arising during the year: |  |  |  |  |
Pensions and other postretirement benefits | $ | (167) |  |  | $ | 42 |  |  | $ | (125) |
Reclassification adjustments for costs included in net income | 27 |  |  | (7) |  |  | 20 |
Subtotal | (140) |  |  | 35 |  |  | (105) |
Other comprehensive income of equity investees | 2 |  |  | — |  |  | 2 |
Other comprehensive loss | $ | (138) |  |  | $ | 35 |  |  | $ | (103) |
Year ended December 31, 2019 |  |  |  |  |
Net gain arising during the year: |  |  |  |  |
Pensions and other postretirement benefits | $ | 81 |  |  | $ | (20) |  |  | $ | 61 |
Reclassification adjustments for costs included in net income | 20 |  |  | (5) |  |  | 15 |
Subtotal | 101 |  |  | (25) |  |  | 76 |
Other comprehensive loss of equity investees | (4) |  |  | — |  |  | (4) |
Other comprehensive income | $ | 97 |  |  | $ | (25) |  |  | $ | 72 |
Year ended December 31, 2018 |  |  |  |  |
Net loss arising during the year: |  |  |  |  |
Pensions and other postretirement benefits | $ | (181) |  |  | $ | 45 |  |  | $ | (136) |
Reclassification adjustments for costs included in net income | 33 |  |  | (8) |  |  | 25 |
Subtotal | (148) |  |  | 37 |  |  | (111) |
Other comprehensive loss of equity investees | (9) |  |  | 1 |  |  | (8) |
Other comprehensive loss | $ | (157) |  |  | $ | 38 |  |  | $ | (119) |

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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