Earnings Per Common Share and Stockholders' Equity (Brookfield Asset Management Equity Investment) (Details)	Nov. 30, 2020 boardOfDirectorsSeats $ / shares shares	Oct. 18, 2020 numberOfStages $ / shares
Third party equity investment, number of stages \| numberOfStages		2
Number of Board of Directors seats third party received following initial equity investment \| boardOfDirectorsSeats	1
Initial Purchase
Third party ownership interest in Company's common stock	9.90%
Third party ownership interest in Company's common stock, price per share	$ 37.00
Third party ownership interest in Company's common stock, shares \| shares	9,106,042
Maximum
Expected future third party ownership interest in Company's common stock		19.90%
Maximum \| Second Purchase
Expected future third party ownership interest in Company's common stock		10.00%
Minimum \| Second Purchase
Expected future third party ownership interest in Company's common stock, price per share		$ 37.00

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