Consolidated Statements of Shareholders' Equity Statement - USD ($) shares in Thousands, $ in Millions	Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Trust for Benefit of Employees [Member]
Shares, Beginning Balance at Dec. 31, 2013			1,117,628				833
Shareholders' equity, Beginning Balance at Dec. 31, 2013	$ 17,631.4		$ 698.5	$ 5,050.0	$ 16,992.4	$ (2,002.7)	$ (93.6)	$ (3,013.2)
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income	2,390.5				2,390.5
Other comprehensive income (loss), net of tax	(1,989.1)					(1,989.1)
Cash dividends	2,108.1				2,108.1
Retirement of treasury shares, shares			(12,579)				(12,579)
Retirement of treasury shares, value	0.0		$ 7.9		792.1		$ 800.0
Purchase of treasury shares, shares							12,579
Purchase of treasury shares, value	(800.0)						$ (800.0)
Issuance of stock under employee stock plans, net, shares			(6,388)				(23)
Issuance of stock under employee stock plans, net, value	92.5		$ 4.0	86.3			$ 2.2
Stock-based compensation	156.0			156.0
Shareholders' equity, Ending Balance at Dec. 31, 2014	15,373.2		$ 694.6	5,292.3	16,482.7	(3,991.8)	$ (91.4)	(3,013.2)
Shares, Ending Balance at Dec. 31, 2014			1,111,437				810
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income	2,408.4				2,408.4
Other comprehensive income (loss), net of tax	(588.9)					(588.9)
Cash dividends	2,136.0				2,136.0
Retirement of treasury shares, shares			(9,877)				(9,877)
Retirement of treasury shares, value	0.0		$ 6.2		743.3		$ 749.5
Purchase of treasury shares, shares							9,877
Purchase of treasury shares, value	(749.5)						$ (749.5)
Issuance of stock under employee stock plans, net, shares			(4,503)				(14)
Issuance of stock under employee stock plans, net, value	46.3		$ 2.9	42.0			$ 1.4
Stock-based compensation	217.8			217.8
Shareholders' equity, Ending Balance at Dec. 31, 2015	14,571.3		$ 691.3	5,552.1	16,011.8	(4,580.7)	$ (90.0)	(3,013.2)
Shares, Ending Balance at Dec. 31, 2015			1,106,063				796
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income	2,737.6				2,737.6
Other comprehensive income (loss), net of tax	(645.1)	[1]				(693.3)
Cash dividends	2,167.6				2,167.6
Retirement of treasury shares, shares			(7,306)				(7,306)
Retirement of treasury shares, value	0.0		$ 4.6		535.5		$ 540.1
Purchase of treasury shares, shares							7,306
Purchase of treasury shares, value	(600.1)			(60.0)			$ (540.1)
Issuance of stock under employee stock plans, net, shares			(2,829)				(85)
Issuance of stock under employee stock plans, net, value	95.5		$ 1.8	106.8			$ 9.5
Stock-based compensation	255.3			255.3
Shareholders' equity, Ending Balance at Dec. 31, 2016	$ 14,007.7		$ 688.5	$ 5,640.6	$ 16,046.3	$ (5,274.0)	$ (80.5)	$ (3,013.2)
Shares, Ending Balance at Dec. 31, 2016			1,101,586				711

[1] Other comprehensive loss in 2016 consists of $693.3 million of other comprehensive loss attributable to controlling interest and $48.2 million of other comprehensive income attributable to non-controlling interest.