Consolidated Statement of Changes In Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in USD per share)	$ 0.52	$ 0.47	$ 0.47	$ 0.47	$ 0.42	$ 0.42	$ 1.46	$ 1.31