Capital Stock and Earnings Per Share - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred stock shares authorized	2,000,000
Preferred stock stated value per share (in dollars per share)	$ 1.00
Preferred stock, shares outstanding	0
Treasury stock acquired	$ 296,520	$ 390,606	$ 465,263
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 9,800	$ 8,600	$ 9,200
Treasury stock, shares, acquired from employees	300,000	200,000	200,000
Cash dividends per common share (in dollars per share)	$ 1.50	$ 1.48	$ 1.46
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	1,100,000	1,100,000	800,000
Share Repurchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Treasury stock acquired	$ 286,700	$ 382,000	$ 456,100
Stock repurchased (in shares)	8,200,000	9,200,000	8,700,000
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock stated value per share (in dollars per share)	$ 0.01