Consolidated Statements of Equity (USD $) In Millions, except Share data	Total	Ordinary shares [Member]	Capital in excess of par value [Member]	Retained earnings [Member]	Accumulated other comprehensive income (loss) [Member]	Noncontrolling interest [Member]	Comprehensive income [Member]
Beginning balance, value at Dec. 31, 2008	$ 6,762.1	$ 318.8	$ 2,246.0	$ 4,547.4	$ (450.8)	$ 100.7
Beginning balance, shares at Dec. 31, 2008		318,800,000
Net earnings	476.2	0	0	451.3	0	24.9	476.2
Currency translation	67.3	0	0	0	67.3	0	67.3
Change in value of marketable securities and cash flow hedges, net of tax	(0.8)	0	0	0	(0.8)	0	(0.8)
Pension and OPEB adjustments, net of tax	(50.0)	0	0	0	(50.0)	0	(50.0)
Total comprehensive income							492.7
Shares issued under incentive stock plans, shares		1,800,000
Shares issued under incentive stock plans, value	27.9	1.8	26.1	0	0	0
Accretion of exchangeable senior notes	10.0	0	10.0	0	0	0
Share-based compensation	68.2	0	68.2	0	0	0
Acquisition/divestiture of noncontrolling interests	(1.5)	0	(0.1)	0	0	(1.4)
Dividends to noncontrolling interests	(20.2)	0	0	0	0	(20.2)
Cash dividends, declared and paid	(160.8)	0	0	(160.8)	0	0
Other	(2.7)	0	(2.6)	0	0	(0.1)
Ending balance, value at Dec. 31, 2009	7,175.7	320.6	2,347.6	4,837.9	(434.3)	103.9
Ending balance, shares at Dec. 31, 2009		320,600,000
Net earnings	665.1	0	0	642.2	0	22.9	665.1
Currency translation	1.8	0	0	0	1.8	0	1.8
Change in value of marketable securities and cash flow hedges, net of tax	7.9	0	0	0	7.9	0	7.9
Pension and OPEB adjustments, net of tax	98.8	0	0	0	99.6	(0.8)	98.8
Total comprehensive income							773.6
Shares issued under incentive stock plans, shares		7,600,000
Shares issued under incentive stock plans, value	149.4	7.6	141.8	0	0	0
Accretion of exchangeable senior notes	13.3	0	13.3	0	0	0
Share-based compensation	73.5	0	73.5	0	0	0
Acquisition/divestiture of noncontrolling interests	(8.4)	0	(4.5)	0	0	(3.9)
Dividends to noncontrolling interests	(20.2)	0	0	0	0	(20.2)
Cash dividends, declared and paid	(90.7)	0	0	(90.7)	0	0
Other	(7.1)	0	0	0	0	(7.1)
Ending balance, value at Dec. 31, 2010	8,059.1	328.2	2,571.7	5,389.4	(325.0)	94.8
Ending balance, shares at Dec. 31, 2010		328,200,000
Net earnings	369.3	0	0	343.2	0	26.1	369.3
Currency translation	(158.1)	0	0	0	(158.1)	0	(158.1)
Change in value of marketable securities and cash flow hedges, net of tax	0.9	0	0	0	0.9	0	0.9
Pension and OPEB adjustments, net of tax	(72.0)	0	0	0	(71.4)	(0.6)	(72.0)
Total comprehensive income							140.1
Shares issued under incentive stock plans, shares		5,200,000
Shares issued under incentive stock plans, value	133.6	5.2	128.4	0	0	0
Treasury Stock, Value, Acquired, Cost Method	(1,157.5)	(36.3)	(1,121.2)	0	0	0
Repurchase of ordinary shares		(36,300,000)
Accretion of exchangeable senior notes	13.3	0	13.3	0	0	0
Share-based compensation	42.6	0	42.6	0	0	0
Acquisition/divestiture of noncontrolling interests	(2.4)	0	(1.3)	0	0	(1.1)
Dividends to noncontrolling interests	(30.1)	0	0	0	0	(30.1)
Cash dividends, declared and paid	(184.7)	0	0	(184.7)	0	0
Other	(1.6)	0	(0.5)	(0.1)	0	(1.0)
Ending balance, value at Dec. 31, 2011	$ 7,012.4	$ 297.1	$ 1,633.0	$ 5,547.8	$ (553.6)	$ 88.1
Ending balance, shares at Dec. 31, 2011		297,100,000