Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	COMMON STOCK, $1 PAR VALUE:	ADDITIONAL PAID-IN CAPITAL:	TREASURY STOCK, AT COST:	RETAINED EARNINGS:	ACCUMULATED OTHER COMPREHENSIVE LOSS:
Beginning balance at Dec. 31, 2021		$ 347.3	$ 142.0		$ 12,025.8	$ (921.1)
Net income	$ 600.5				600.5
Purchases				$ (1.9)
Cash dividends declared on common stock					(118.4)
Stock compensation		0.4	25.3
Other comprehensive income	43.4					43.4
Ending balance at Mar. 31, 2022	12,143.3	347.7	167.3	(1.9)	12,507.9	(877.7)
Beginning balance at Dec. 31, 2022	13,167.1	522.0	196.1		13,402.4	(953.4)
Net income	733.9				733.9
Purchases				(3.0)
Cash dividends declared on common stock					(131.0)
Stock compensation		0.6	34.2
Other comprehensive income	80.2					80.2
Ending balance at Mar. 31, 2023	$ 13,882.0	$ 522.6	$ 230.3	$ (3.0)	$ 14,005.3	$ (873.2)