Total Equity and Other Comprehensive Income (Dividends per Share) (Details) - $ / shares		3 Months Ended
	Apr. 04, 2019	Mar. 31, 2019	Mar. 31, 2018
Common Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Common, per share (in dollars per share)		$ 0.95	$ 0.75
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		0.45	0.45
Series O Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		3,375	3,375
Series P Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		1,531.25	1,531.25
Series Q Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		1,343.75	1,343.75
Series R Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		0	0
Series S Preferred Stock [Member]
Class of Stock [Line Items]
Cash dividends declared, Preferred, per share (in dollars per share)		$ 0	$ 0
Subsequent Event [Member]
Class of Stock [Line Items]
Cash dividends declared, Common, per share (in dollars per share)	$ 0.95