Shareholders’ Equity (Dividends) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Shareholders’ Equity [Abstract]
Common stock dividends paid in aggregate	$ 349,700	$ 349,200	$ 1,000,000	$ 1,000,000
Common stock dividends paid per share	$ 2.00	$ 2.00	$ 6.00	$ 6.00
Preferred share dividends	$ 50,028	$ 54,080	$ 158,565	$ 162,238