CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - TREASURY STOCK – COMMON: - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Purchase of shares for company benefit plans (in shares)	81,093	17,046	2,620,566	1,468,524
Release of shares from company benefit plans (in shares)	148,767	114,450	259,563	389,857