Consolidated Statement of Changes in Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per Common Share (USD per share)	$ 1.90	$ 1.85	$ 2.30	$ 2.20