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, 2020		$ 346.6	$ 88.5		$ 11,148.5	$ (1,050.3)
Net income	$ 470.8				470.8
Purchases				$ (1.4)
Cash dividends declared on common stock					(111.3)
Stock compensation		0.6	35.8
Other comprehensive income (loss)	(66.1)					(66.1)
Ending balance at Mar. 31, 2021	10,861.7	347.2	124.3	(1.4)	11,508.0	(1,116.4)
Beginning balance at Dec. 31, 2021	11,594.0	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 (loss)	43.4					43.4
Ending balance at Mar. 31, 2022	$ 12,143.3	$ 347.7	$ 167.3	$ (1.9)	$ 12,507.9	$ (877.7)