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

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Amount of stock repurchase plan authorized.

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Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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

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Equity and Dividends (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended		9 Months Ended
	Nov. 06, 2022	Apr. 15, 2022	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity, Class of Treasury Stock [Line Items]
2022 repurchase plan		$ 240.0
Effective period of stock repurchase plan		1 year
Shares of common stock repurchased through the open market transactions (in shares)			1,272,179				2,468,354
Average price of shares repurchased (in dollars per share)			$ 64.44				$ 61.56
Remaining amount of 2022 repurchase plan			$ 88.4				$ 88.4
Dividends to common stockholders (in dollars per share)			$ 0.90	$ 0.90	$ 1.80	$ 2.0025	$ 2.70	$ 2.9025
Subsequent Event \| Declared November 6, 2022
Equity, Class of Treasury Stock [Line Items]
Dividends to common stockholders (in dollars per share)	$ 0.9