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

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

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Aggregate dividends paid during the period for each share of preferred stock outstanding.

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Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended												3 Months Ended		9 Months Ended
	Sep. 30, 2021	Aug. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Jan. 31, 2021	Oct. 31, 2020	Sep. 30, 2020	Jul. 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Jan. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Feb. 28, 2021	Dec. 31, 2020	Aug. 31, 2020	Jun. 30, 2020	Feb. 29, 2020	Dec. 31, 2019
Dividends payable on common shares	$ 58.5							$ 58.6					$ 58.5	$ 58.6	$ 58.5	$ 58.6			$ 2,694.5
Common Stock, Dividends, Per Share, Declared													$ 0.10	$ 0.10	$ 0.30	$ 0.30
Quarterly dividend [Member]
Common Stock, Dividends, Per Share, Cash Paid			$ 0.10	$ 0.10		$ 0.10	$ 0.10		$ 0.10	$ 0.10		$ 0.10
Common Stock, Dividends, Per Share, Declared		$ 0.10
Annual variable dividend
Common Stock, Dividends, Per Share, Cash Paid						$ 4.50						$ 2.25
Series B Preferred Stock
Preferred Stock, Dividends, Per Share, Cash Paid	$ 26.875				$ 26.875			$ 26.875			$ 26.875
Dividends payable on common shares		$ 13.4																$ 13.4		$ 13.4		$ 13.4
Common equities \| Quarterly dividend [Member]
Dividends payable on common shares	$ 58.5				$ 58.5			$ 58.6			$ 58.5		$ 58.5	$ 58.6	$ 58.5	$ 58.6	$ 58.5		58.6		$ 58.5		$ 58.5
Common equities \| Annual variable dividend
Dividends payable on common shares																			$ 2,635.9				$ 1,316.9