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8. Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Accumulated other comprehensive income (loss) included in our consolidated balance sheets and consolidated statements of changes in stockholders' equity consists of the following components (in millions):
| Foreign currency translation adjustments | Foreign other post-employment benefits adjustments | Net unrealized holding gains (losses) on available-for-sale investments | Total Accumulated other comprehensive income (loss)
Balances as of January 1, 2021 | $ | 298.6 |  | $ | (26.0) |  | $ | 9.8 |  | $ | 282.4 |
Other comprehensive (loss) income, before reclassifications | (469.5) |  | 17.9 |  | (4.0) |  | (455.6) |
Amounts reclassified from accumulated other comprehensive income | — |  | 0.3 |  | (1.2) |  | (0.9) |
Income tax effects | 0.4 |  | (3.1) |  | 1.2 |  | (1.5) |
Other comprehensive income (loss), net of income taxes | (469.1) |  | 15.1 |  | (4.0) |  | (458.0) |
Balances as of December 31, 2021 | $ | (170.5) |  | $ | (10.9) |  | $ | 5.8 |  | $ | (175.6) |
Other comprehensive income (loss), before reclassifications | (296.3) |  | 25.4 |  | (21.5) |  | (292.4) |
Amounts reclassified from accumulated other comprehensive income | — |  | 0.1 |  | 0.6 |  | 0.7 |
Income tax effects | 0.3 |  | (4.6) |  | 4.8 |  | 0.5 |
Other comprehensive income (loss), net of income taxes | (296.0) |  | 20.9 |  | (16.1) |  | (291.2) |
Balances as of December 31, 2022 | $ | (466.5) |  | $ | 10.0 |  | $ | (10.3) |  | $ | (466.8) |

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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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