CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical)	3 Months Ended					6 Months Ended
	Jun. 30, 2021 $ / shares	Mar. 31, 2021 Dividend	Jun. 30, 2020 $ / shares	[1]	Mar. 31, 2020 Dividend	Jun. 30, 2021 $ / shares	[1]	Jun. 30, 2020 $ / shares
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share) | $ / shares	$ 0.45		$ 0.44			$ 1.34		$ 1.31
Number of dividends declared per quarter | Dividend		2			2

[1] Two dividends were declared in each of the first quarters of 2021 and 2020.