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Operations and Summary of Significant Accounting Policies - Summary of Interest Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Interest expense	$ 24.9	$ 28.8	$ 61.9
Interest income	(9.9)	(8.9)	(8.1)
Interest expense, net	$ 15.0	$ 19.9	$ 53.8

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Amount of the cost of borrowed funds accounted for as interest expense.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
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The net amount of operating interest income (expense).

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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