Consolidated Statements Of Stockholders' Equity - USD ($) $ in Millions	Total	COMMON STOCK, $1 PAR VALUE:	ADDITIONAL PAID-IN CAPITAL:	TREASURY STOCK, AT COST:	RETAINED EARNINGS:	ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME:
Balance at Dec. 31, 2012		$ 353.4	$ 56.6		$ 5,596.4	$ (159.5)
Net income	$ 1,171.3				1,171.3
Other comprehensive (loss) income	168.2					168.2
Cash dividends declared on common stock, per share: 2015 - $2.32; 2014 - $1.86; 2013 - $1.70					(602.6)
Stock compensation		0.9
Stock compensation and tax benefit			49.6
Balance at Dec. 31, 2013	6,634.3	354.3	106.2		6,165.1	8.7
Net income	1,358.8				1,358.8
Purchases, shares: 2015 - 3.85; 2014 - .73; 2013 - nil				$ (42.7)
Other comprehensive (loss) income	(588.5)					(588.5)
Cash dividends declared on common stock, per share: 2015 - $2.32; 2014 - $1.86; 2013 - $1.70					(660.1)
Stock compensation		0.9
Stock compensation and tax benefit			50.5
Balance at Dec. 31, 2014	6,753.2	355.2	156.7	(42.7)	6,863.8	(579.8)
Net income	1,604.0				1,604.0
Purchases, shares: 2015 - 3.85; 2014 - .73; 2013 - nil				(201.6)
Other comprehensive (loss) income	(437.2)					(437.2)
Cash dividends declared on common stock, per share: 2015 - $2.32; 2014 - $1.86; 2013 - $1.70					(819.8)
Treasury stock retirement		(4.6)	(128.5)	$ 244.3	(111.2)
Stock compensation		0.7
Stock compensation and tax benefit			41.1
Balance at Dec. 31, 2015	$ 6,940.4	$ 351.3	$ 69.3		$ 7,536.8	$ (1,017.0)