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Share Repurchase Transactions and Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2023
Federal Home Loan Banks [Abstract] |
Components of Accumulated Other Comprehensive Loss | The components of accumulated other comprehensive loss are as follows (dollars in millions):
| Unrealized Gains (Losses) on Available- for-Sale Securities |  |  | Foreign Currency Translation Adjustments |  |  | Defined Benefit Plans |  |  | Total |
Balances at December 31, 2022 | $ | (30 | ) |  | $ | (373 | ) |  | $ | (87 | ) |  | $ | (490 | )
Unrealized gains on available-for-sale securities, net of $2 of income taxes |  | 5 |  |  |  |  |  |  |  |  |  | 5 |
Foreign currency translation adjustments, net of $3 of income taxes |  |  |  |  | 15 |  |  |  |  |  |  | 15 |
Balances at March 31, 2023 | $ | (25 | ) |  | $ | (358 | ) |  | $ | (87 | ) |  | $ | (470 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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