Shareholders' Equity

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Shareholders' Equity

Shareholders' Equity

A class of 10 million shares of preferred stock, without par value, is authorized but unissued. Common stock has a par value of $1.66  2/3 per share; 1.2 billion shares are authorized.

	Common Stock	Treasury Stock	Shares Outstanding
January 1, 2018	581,146,136	(329,971,737)	251,174,399
Purchases	—	(15,877,364)	(15,877,364)
Issuances	—	564,399	564,399
December 31, 2018	581,146,136	(345,284,702)	235,861,434
Purchases	—	(2,722,800)	(2,722,800)
Issuances	—	2,541,836	2,541,836
December 31, 2019	581,146,136	(345,465,666)	235,680,470
Issuances	—	1,005,795	1,005,795
December 31, 2020	581,146,136	(344,459,871)	236,686,265

Per share cash dividends paid were $2.10, $1.98 and $1.86 in 2020, 2019 and 2018, respectively.