Compensation Related Costs, Retirement Benefits (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
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| Retirement Benefits [Abstract] | ||
| Liability, Retirement and Postemployment Benefits | $ 7.9 | |
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 0.1 | |
| Other Long-term Investments | ||
| Retirement Benefits [Abstract] | ||
| Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | 6.2 | $ 6.4 |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
| Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | $ 6.2 | $ 6.4 |
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- References No definition available.
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- Definition Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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