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, 2017			$ 351.8	$ 123.2		$ 8,369.1	$ (793.6)
Net income	$ 1,617.0					1,617.0
Purchases					$ (153.2)
Cash dividends declared on common stock						(284.8)
Cumulative effect of change in accounting principles						17.1
Stock compensation			0.4	25.4
Other comprehensive loss	(101.4)						(101.4)
Ending balance at Sep. 30, 2018	9,171.0		352.2	148.6	(153.2)	9,718.4	(895.0)
Beginning balance at Jun. 30, 2018			352.2	143.8	(94.2)	9,271.3	(893.7)
Net income	545.3					545.3
Purchases					(59.0)
Cash dividends declared on common stock						(98.2)
Stock compensation				4.8
Other comprehensive loss	(1.3)						(1.3)
Ending balance at Sep. 30, 2018	9,171.0		352.2	148.6	(153.2)	9,718.4	(895.0)
Beginning balance at Dec. 31, 2018	8,592.9	[1]	346.6	69.4		9,275.4	(1,098.5)
Net income	1,856.6					1,856.6
Purchases					(110.2)
Cash dividends declared on common stock						(333.3)
Stock compensation			0.8	47.4
Other comprehensive loss	(91.5)						(91.5)
Ending balance at Sep. 30, 2019	9,962.7		347.4	116.8	(110.2)	10,798.7	(1,190.0)
Beginning balance at Jun. 30, 2019			347.2	105.1	(56.5)	10,301.8	(1,062.2)
Net income	607.9					607.9
Purchases					(53.7)
Cash dividends declared on common stock						(111.0)
Stock compensation			0.2	11.7
Other comprehensive loss	(127.8)						(127.8)
Ending balance at Sep. 30, 2019	$ 9,962.7		$ 347.4	$ 116.8	$ (110.2)	$ 10,798.7	$ (1,190.0)

[1] The December 31, 2018 consolidated balance sheet has been derived from audited financial statements.