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Accumulated Other Comprehensive Income - Reclassification from AOCI Textuals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Reclassification Adjustment Out of Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from other comprehensive income to earnings		$ (2.2)		$ (4.4)
Comprehensive Income [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from other comprehensive income to earnings	$ (2.2)	$ (2.2)	$ (4.4)	$ (4.4)

X

- Definition

Net of tax amount of the income statement impact of the reclassification adjustment for actuarial (gains) losses and reclassification adjustment for prior service costs recognized as a component of net periodic benefit cost.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Details

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