Operating Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended			9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Segment	Sep. 30, 2012	Jun. 30, 2013 Global Energy	Sep. 30, 2013 Operating segment	Sep. 30, 2012 Operating segment	Sep. 30, 2013 Operating segment	Sep. 30, 2012 Operating segment	Sep. 30, 2013 Operating segment Global Industrial	Sep. 30, 2012 Operating segment Global Industrial	Sep. 30, 2013 Operating segment Global Industrial	Sep. 30, 2012 Operating segment Global Industrial	Sep. 30, 2013 Operating segment Global Institutional	Sep. 30, 2012 Operating segment Global Institutional	Sep. 30, 2013 Operating segment Global Institutional	Sep. 30, 2012 Operating segment Global Institutional	Sep. 30, 2013 Operating segment Global Energy	Sep. 30, 2012 Operating segment Global Energy	Sep. 30, 2013 Operating segment Global Energy	Sep. 30, 2012 Operating segment Global Energy	Sep. 30, 2013 Operating segment Other	Sep. 30, 2012 Operating segment Other	Sep. 30, 2013 Operating segment Other	Sep. 30, 2012 Operating segment Other	Sep. 30, 2013 Currency impact	Sep. 30, 2012 Currency impact	Sep. 30, 2013 Currency impact	Sep. 30, 2012 Currency impact	Sep. 30, 2013 Intersegment	Sep. 30, 2013 Corporate	Sep. 30, 2012 Corporate	Sep. 30, 2013 Corporate	Sep. 30, 2012 Corporate
Financial information of reportable segments
Number of operating units			10
Amortization expense transferred to reportable segment					$ 14.0
Number of reportable segments			4
Net sales	3,484.0	3,023.3	9,693.9	8,792.9		3,535.9	3,051.6	9,754.0	8,793.4	1,261.1	1,225.3	3,622.0	3,533.9	1,099.2	1,047.7	3,128.8	3,027.5	990.6	588.2	2,470.7	1,677.2	185.0	190.4	532.5	554.8	(51.9)	(28.3)	(60.1)	(0.5)	0
Operating Income	$ 476.0	$ 401.2	$ 1,090.0	$ 893.5		$ 485.8	$ 404.3	$ 1,102.3	$ 896.0	$ 181.3	$ 164.1	$ 455.7	$ 396.3	$ 224.9	$ 197.1	$ 563.8	$ 510.6	$ 135.5	$ 95.4	$ 331.4	$ 256.6	$ 26.9	$ 30.0	$ 73.7	$ 77.3	$ (9.8)	$ (3.1)	$ (12.3)	$ (2.5)		$ (82.8)	$ (82.3)	$ (322.3)	$ (344.8)