Consolidated Statements Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]
Balance at Dec. 31, 2015	$ 23,044.1	$ 2.6	$ 8,555.6	$ 14,778.5	$ (292.6)
Balance (in shares) at Dec. 31, 2015		261.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,101.4			2,101.4
Other comprehensive income (loss)	(71.3)				(71.3)
Dividends and dividend equivalents	(515.8)			(515.8)
Issuance of common stock under employee stock plans, net of related tax benefits	185.5		185.5
Issuance of common stock under employee stock plans, net of related tax benefits, Shares		2.2
Equity Units issuance costs adjustment	0.3		0.3
Balance at Sep. 30, 2016	24,744.2	$ 2.6	8,741.4	16,364.1	(363.9)
Balance (in shares) at Sep. 30, 2016		263.4
Balance at Dec. 31, 2016	25,100.4	$ 2.6	8,805.1	16,560.6	(267.9)
Balance (in shares) at Dec. 31, 2016		263.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,612.1			2,612.1
Other comprehensive income (loss)	141.9				141.9
Premiums for and settlement of equity options	0.9		0.9
Repurchase and retirement of common stock, value	$ (1,635.4)	$ 0.0	(296.1)	(1,339.3)
Repurchase and retirement of common stock, shares	(8.7)	(8.7)
Dividends and dividend equivalents	$ (526.8)			(526.8)
Issuance of common stock under employee stock plans, net of related tax benefits	256.3		256.3
Issuance of common stock under employee stock plans, net of related tax benefits, Shares		2.4
Convertible debenture repurchases and conversions	(1.1)		(1.1)
Balance at Sep. 30, 2017	$ 25,948.3	$ 2.6	$ 8,765.1	$ 17,306.6	$ (126.0)
Balance (in shares) at Sep. 30, 2017		257.4