CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Treasury Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Noncontrolling Interest
Balance at Dec. 31, 2013	$ 5,438.4	$ 0.6	$ (201.8)	$ 1,594.3	$ 3,725.6	$ (42.6)	$ 5,076.1	$ 362.3
Increase (decrease) in equity
Net earnings	720.4				708.5		708.5	11.9
Other comprehensive income:
Foreign currency translation adjustment—net of taxes	(16.9)					(16.9)	(16.9)
Unrealized net gain on securities—net of taxes	0.1					0.1	0.1
Defined benefit plans—net of taxes	7.4					7.4	7.4
Comprehensive income	711.0						699.1	11.9
Purchases of treasury stock	(794.0)		(794.0)				(794.0)
Issuance of $0.01 par value common stock under employee stock plans	9.4		0	9.4	0		9.4
Stock-based compensation expense	3.8			3.8			3.8
Excess tax benefit from stock-based compensation	4.5			4.5			4.5
Cash dividends ($1.50 and $1.00 per share) for the years ended 2015 and 2014 respectively	(55.2)				(55.2)		(55.2)
Distributions declared to noncontrolling interest	(9.6)							(9.6)
Balance at Mar. 31, 2014	5,308.3	0.6	(995.8)	1,612.0	4,378.9	(52.0)	4,943.7	364.6
Balance at Dec. 31, 2014	4,572.5	0.5	(222.2)	1,415.9	3,175.3	(159.8)	4,209.7	362.8
Increase (decrease) in equity
Net earnings	235.9				230.6		230.6	5.3
Other comprehensive income:
Foreign currency translation adjustment—net of taxes	(86.3)					(86.3)	(86.3)	0
Unrealized net gain on securities—net of taxes	0
Defined benefit plans—net of taxes	5.8					5.8	5.8
Comprehensive income	155.4						150.1	5.3
Purchases of treasury stock	(236.6)		(236.6)				(236.6)
Acquisition of treasury stock under employee stock plans	(0.1)	0	(0.1)	0	0		(0.1)
Issuance of $0.01 par value common stock under employee stock plans	5.7		0	5.7	0		5.7
Stock-based compensation expense	3.4			3.4			3.4
Excess tax benefit from stock-based compensation	1.5			1.5			1.5
Cash dividends ($1.50 and $1.00 per share) for the years ended 2015 and 2014 respectively	(71.8)				(71.8)		(71.8)
Distributions declared to noncontrolling interest	(11.5)							(11.5)
Balance at Mar. 31, 2015	$ 4,418.5	$ 0.5	$ (458.9)	$ 1,426.5	$ 3,334.1	$ (240.3)	$ 4,061.9	$ 356.6