Retirement Benefits - Narrative (Details) $ in Millions |
6 Months Ended |
|---|---|
|
Jun. 30, 2021
USD ($)
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| Retirement Benefits [Abstract] | |
| Pension contributions | $ 0.5 |
| Estimated employer contributions in current fiscal year | $ 1.2 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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