Equity (Components of Shareholders' Equity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Balance at December 31:	$ 7,229.3	$ 7,012.4
Net earnings	94.6	102.2
Currency translation	(103.6)	136.5
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	(8.6)	(1.4)
Pension and OPEB adjustments, net of tax	27.2	29.9
Total comprehensive income (loss)	9.6	267.2
Share-based compensation	21.5	6.9
Dividends to noncontrolling interests	(2.8)	(3.5)
Dividends to ordinary shareholders	(0.8)	(0.2)
Accretion of Exchangeable Senior Notes from Temporary Equity		2.7
Shares issued under incentive plans, net	90.7	13.0
Balance at March 31:	7,347.5	7,298.5
Shareholders' Equity [Member]
Balance at December 31:	7,147.8	6,924.3
Net earnings	88.0	95.6
Currency translation	(104.8)	136.5
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	(8.6)	(1.4)
Pension and OPEB adjustments, net of tax	27.2	29.9
Total comprehensive income (loss)	1.8	260.6
Share-based compensation	21.5	6.9
Dividends to noncontrolling interests	0	0
Dividends to ordinary shareholders	(0.8)	(0.2)
Accretion of Exchangeable Senior Notes from Temporary Equity		2.7
Shares issued under incentive plans, net	90.7	13.0
Balance at March 31:	7,261.0	7,207.3
Noncontrolling Interest [Member]
Balance at December 31:	81.5	88.1
Net earnings	6.6	6.6
Currency translation	1.2	0
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax	0	0
Pension and OPEB adjustments, net of tax	0	0
Total comprehensive income (loss)	7.8	6.6
Share-based compensation	0	0
Dividends to noncontrolling interests	(2.8)	(3.5)
Dividends to ordinary shareholders	0	0
Accretion of Exchangeable Senior Notes from Temporary Equity		0
Shares issued under incentive plans, net	0	0
Balance at March 31:	$ 86.5	$ 91.2