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Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Millions							3 Months Ended
	Oct. 09, 2020	Jul. 02, 2020	Apr. 09, 2020	Oct. 11, 2019	Jul. 05, 2019	Apr. 12, 2019	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Cash dividends declared (in dollars per share)							$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.06
Cash dividends declared							$ 6.3	$ 6.3	$ 6.5	$ 6.5	$ 6.6	$ 4.0
Cash dividends paid (in dollars per share)		$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.06
Dividends paid on common stock		$ 6.3	$ 6.5	$ 6.5	$ 6.6	$ 4.0
Subsequent Event
Cash dividends paid (in dollars per share)	$ 0.10
Dividends paid on common stock	$ 6.3

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Aggregate dividends paid during the period for each share of common stock outstanding.

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