CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONSOLIDATED STATEMENT OF CHANGES IN EQUITY
Common stock issued under employee plans (in shares)	1,037,255	1,059,160
Purchases of treasury stock under employee plans (in shares)	325,635	289,364
Sales of treasury stock under employee plans (in shares)	45,878	43,179
Other treasury shares purchased, not retired (in shares)	4,968,417	7,183,494