CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical)	3 Months Ended
	Mar. 31, 2020 Dividend $ / shares	Mar. 31, 2019 Dividend $ / shares
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share) | $ / shares	$ 0.87	$ 0.85
Number of dividends declared per quarter | Dividend	2	2