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Interest and Other Nonoperating Income (Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Interest and Other Income [Abstract] |  |  |
Interest income | $ 23.6 | $ 12.1 | $ 5.6
Retirement benefit cost other than service cost | (16.7) | (38.7) | (37.9)
Foreign currency transaction gains (losses)(a) | 2.4 | 0.4 | (3.6)
Non-income taxes on intercompany billings | (2.3) | (3.9) | (4.6)
Argentina turnover tax | (1.8) |  |
Gain (loss) on equity securities | 0.0 | 16.0 | 10.6
G4S indemnification asset adjustment | 0.0 | 2.7 |
Penalties and interest on non-income taxes | 0.0 | (1.8) |
Gains related to litigation | 0.0 | 1.7 |
Earn-out liability adjustment | 0.0 | 1.3 |
Interest on non-income tax credits | 0.0 | 1.2 |
Derivative instrument losses | 0.0 | 0.0 | (7.0)
Gain on a disposition of a subsidiary | 0.0 | 0.0 | (4.1)
Other | (1.5) | 2.0 | (4.9)
Interest and other nonoperating income (expense) | $ 3.7 | $ (7.0) | $ (37.7)

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- Definition Amount of unrealized gain (loss) recognized in earnings from transfer of investment in debt security measured at fair value with change in fair value recognized in other comprehensive (available-for-sale) to investment in debt security measured at fair value with change in fair value recognized in net income (trading). Excludes other-than-temporary impairment (OTTI) previously recognized in other comprehensive income (OCI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27357-111563 + Details
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