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Benefit Plans and Other Postretirement Benefits, Pension plans with an accumulated benefit obligation in excess of plan assets (Details) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
United States
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	$ 29.8	$ 495.0
Fair value of plan assets	11.7	473.2
Foreign Plans
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	287.6	253.4
Fair value of plan assets	$ 110.7	$ 107.8

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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