CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Millions, unless otherwise specified	Total	Total Stockholders' Equity	Common Stock	Treasury Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interest	Comprehensive Income
Balance at Dec. 31, 2010	$ 4,433.4	$ 4,050.4	$ 0.7		$ 2,732.2	$ 1,370.8	$ (53.3)	$ 383.0
Increase (decrease) in equity
Net earnings	1,258.8	1,100.3				1,100.3		158.5	1,258.8
Other comprehensive income
Foreign currency translation adjustment - net of taxes	(21.2)	(19.9)					(19.9)	(1.3)	(21.2)
Unrealized gain on securities - net of taxes	1.4	1.4					1.4		1.4
Defined benefit plan - net of taxes	4.4	4.4					4.4		4.4
Comprehensive income	1,243.4	1,086.2						157.2	1,243.4
Acquisition of treasury stock under employee stock plans	(0.3)	(0.3)		(0.3)
Issuance of $0.01 par value common stock under employee stock plans	14.5	14.5		0.3	14.5	(0.3)
Stock-based compensation expense	7.3	7.3			7.3
Excess tax benefit from stock-based compensation	25.7	25.7			25.7
Purchase of treasury stock	(878.4)	(878.4)		(878.4)
Cash dividends ($1.20 per share and $0.60 per share for the nine months ended September 30, 2012 and 2011, respectively)	(42.6)	(42.6)				(42.6)
Declaration of distribution payable	(45.9)							(45.9)
Effect of exchange rates changes	(7.3)							(7.3)
Balance at Sep. 30, 2011	4,749.8	4,262.8	0.7	(878.4)	2,779.7	2,428.2	(67.4)	487.0
Balance at Dec. 31, 2011	4,932.9	4,547.0	0.7	(1,000.2)	2,804.8	2,841.0	(99.3)	385.9
Increase (decrease) in equity
Net earnings	1,568.1	1,378.0				1,378.0		190.1	1,568.1
Other comprehensive income
Foreign currency translation adjustment - net of taxes	48.4	47.4					47.4	1.0	48.4
Unrealized gain on securities - net of taxes	1.5	1.5					1.5		1.5
Defined benefit plan - net of taxes	12.5	12.5					12.5		12.5
Comprehensive income	1,630.5	1,439.4						191.1	1,630.5
Acquisition of treasury stock under employee stock plans	(2.3)	(2.3)		(2.3)
Issuance of $0.01 par value common stock under employee stock plans	12.6	12.6			12.6
Stock-based compensation expense	8.0	8.0			8.0
Excess tax benefit from stock-based compensation	30.0	30.0			30.0
Purchase of treasury stock	(500.0)	(500.0)		(500.0)
Retirement of treasury stock			(0.1)	1,500.2	(374.2)	(1,125.9)
Cash dividends ($1.20 per share and $0.60 per share for the nine months ended September 30, 2012 and 2011, respectively)	(77.4)	(77.4)				(77.4)
Declaration of distribution payable	(58.8)							(58.8)
Effect of exchange rates changes	2.6							2.6
Balance at Sep. 30, 2012	$ 5,978.1	$ 5,457.3	$ 0.6	$ (2.3)	$ 2,481.2	$ 3,015.7	$ (37.9)	$ 520.8