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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jan. 22, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Events
Common Stock, Dividends, Per Share, Declared		$ 0.92	$ 0.91	$ 0.87
Earnings Per Share, Diluted		$ 4.27	$ 2.98	$ 2.72
Subsequent Event
Subsequent Events
Common Stock, Dividends, Per Share, Declared	$ 0.23
Dividends	$ 10.0

X

- Definition

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

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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