Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Millions			3 Months Ended
Apr. 09, 2020	Apr. 12, 2019	Mar. 31, 2020	Mar. 31, 2019
Cash dividends declared (in dollars per share)			$ 0.10	$ 0.06
Cash dividends declared			$ 6.5	$ 4.0
Cash dividends paid (in dollars per share)		$ 0.06
Dividends paid on common stock		$ 4.0	$ 6.5	$ 4.0
Subsequent Event
Cash dividends paid (in dollars per share)	$ 0.10
Dividends paid on common stock	$ 23.6

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

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