Consolidated Statement of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Items [Member]
Balance (in shares) at Dec. 31, 2012		413.5			56.0
Balance at Dec. 31, 2012	$ 15,464.7	$ 413.5	$ 10,501.1	$ 7,697.3	$ (2,996.8)	$ (150.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retirement of treasury shares (in shares)		(50.0)			(50.0)
Retirement of treasury shares		$ (50.0)	(2,647.7)		$ 2,697.7
Issuance of shares under employees' and directors' stock plans (in shares)		6.1			0.3
Issuance of shares under employees' and directors' stock plans	215.7	$ 6.1	232.9		$ (23.3)
Stock-based compensation	90.9		90.9
Tax benefit related to employees' and directors' stock plans	46.6		46.6
Purchases of company common stock (in shares)					1.3
Purchases of company common stock	(89.8)				$ (89.8)
Dividends declared	(217.3)			(217.3)
Net Income	1,273.3			1,273.3
Other comprehensive items	73.2					73.2
Other	(1.2)		(1.2)
Balance (in shares) at Dec. 31, 2013		369.6			7.6
Balance at Dec. 31, 2013	16,856.1	$ 369.6	8,222.6	8,753.3	$ (412.2)	(77.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)		4.0			0.4
Issuance of shares under employees' and directors' stock plans	121.6	$ 4.0	161.3		$ (43.7)
Issuance of shares (in shares)		34.9
Issuance of shares	2,942.3	$ 34.9	2,907.4
Stock-based compensation	117.1		117.1
Tax benefit related to employees' and directors' stock plans	65.4		65.4
Dividends declared	(240.8)			(240.8)
Net Income	1,894.4			1,894.4
Other comprehensive items	(1,207.8)					(1,207.8)
Other	(0.2)		(0.2)
Balance (in shares) at Dec. 31, 2014		408.5			8.0
Balance at Dec. 31, 2014	20,548.1	$ 408.5	11,473.6	10,406.9	$ (455.9)	(1,285.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares under employees' and directors' stock plans (in shares)		3.4			0.4
Issuance of shares under employees' and directors' stock plans	90.8	$ 3.4	139.4		$ (52.0)
Stock-based compensation	125.0		125.0
Tax benefit related to employees' and directors' stock plans	63.2		63.2
Purchases of company common stock (in shares)					3.9
Purchases of company common stock	(500.0)				$ (500.0)
Dividends declared	(240.0)			(240.0)
Net Income	1,975.4			1,975.4
Other comprehensive items	(712.3)					(712.3)
Balance (in shares) at Dec. 31, 2015		411.9			12.3
Balance at Dec. 31, 2015	$ 21,350.2	$ 411.9	$ 11,801.2	$ 12,142.3	$ (1,007.9)	$ (1,997.3)