Equity (Components of Shareholders' Equity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Balance at December 31:			$ 7,229.3	$ 7,012.4
Net earnings	324.7	372.9	419.3	475.1
Currency translation			(136.5)	(116.0)
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax			13.9	2.9
Pension and OPEB adjustments, net of tax			37.1	64.8
Total comprehensive income (loss)	324.2	159.6	333.8	426.8
Share-based compensation			40.1	19.3
Settlement of Exchangeable Senior Notes				(4.5)
Acquisition/divestiture of noncontrolling interests				(0.4)
Dividends declared to noncontrolling interests			(5.6)	(10.3)
Dividends declared to ordinary shareholders			(62.4)	(49.8)
Accretion of Exchangeable Senior Notes from Temporary Equity				3.3
Shares issued under incentive plans, net			118.6	24.9
Repurchase of ordinary shares			(477.6)	(35.0)
Balance at June 30:	7,176.2	7,386.7	7,176.2	7,386.7
Shareholders' Equity [Member]
Balance at December 31:			7,147.8	6,924.3
Net earnings			405.2	461.4
Currency translation			(128.6)	(116.0)
Change in value of marketable securities and derivatives qualifying as cash flow hedges, net of tax			13.9	2.9
Pension and OPEB adjustments, net of tax			37.1	64.8
Total comprehensive income (loss)			327.6	413.1
Share-based compensation			40.1	19.3
Settlement of Exchangeable Senior Notes				(4.5)
Acquisition/divestiture of noncontrolling interests				0
Dividends declared to noncontrolling interests			0	0
Dividends declared to ordinary shareholders			(62.4)	(49.8)
Accretion of Exchangeable Senior Notes from Temporary Equity				3.3
Shares issued under incentive plans, net			118.6	24.9
Repurchase of ordinary shares			(477.6)	(35.0)
Balance at June 30:	7,094.1	7,295.6	7,094.1	7,295.6
Noncontrolling Interest [Member]
Balance at December 31:			81.5	88.1
Net earnings			14.1	13.7
Currency translation			(7.9)	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)			6.2	13.7
Share-based compensation			0	0
Settlement of Exchangeable Senior Notes				0
Acquisition/divestiture of noncontrolling interests				(0.4)
Dividends declared to noncontrolling interests			(5.6)	(10.3)
Dividends declared to ordinary shareholders			0	0
Accretion of Exchangeable Senior Notes from Temporary Equity				0
Shares issued under incentive plans, net			0	0
Repurchase of ordinary shares			0	0
Balance at June 30:	$ 82.1	$ 91.1	$ 82.1	$ 91.1