Reclassifications out of Accumulated Other Comprehensive Income (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
Reclassfication Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior service credit, net of tax	$ 0.6	$ 1.0	$ 1.1	$ 2.8
Amortization of net actuarial gain, net of tax	2.5	1.1	5.0	1.6
Reclassification of prior service credit	0	40.5	0	40.5
Total reclassification, net of tax - pension and postretirement benefits	3.1	42.6	6.1	44.9
Reclassification adjustment for gain (loss), net of tax - currency	208.4	210.5	393.9	414.5
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of tax	0.1	(1.7)	0	(4.0)
Total reclassification, net of tax	3.2	40.9	6.1	40.9
Commodity [Member]
Reclassfication Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of tax	0	(0.2)	0	(1.3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Currency [Member]
Reclassfication Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustment for gain (loss), net of tax - currency	$ 0.1	$ (1.5)	$ 0	$ (2.7)