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Employee Benefit Plans - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Retirement Benefits [Abstract]
Cash contributions made during the period	$ 10
Expected additional cash contributions	$ 12

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- References

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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-Publisher FASB
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Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year.

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