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Shareholders' Equity and Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Jan. 26, 2021
Class of Stock [Line Items]
Authorized amount			$ 200.0
Common Stock
Class of Stock [Line Items]
Share repurchased	$ 74.6	$ 167.1
Shares repurchased (in shares)	1.8	3.7
Average price of shares repurchased (in dollars per share)	$ 42.00	$ 44.88

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Amount of stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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