Acquisitions (Details)	3 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2014 DKK	Sep. 30, 2014 Cheminova [Member] USD ($)	Sep. 30, 2013 Cheminova [Member] USD ($)	Sep. 30, 2014 Cheminova [Member] USD ($)	Sep. 30, 2013 Cheminova [Member] USD ($)	Sep. 30, 2014 EPAX [Member] USD ($)	Sep. 30, 2013 EPAX [Member] USD ($)	Sep. 30, 2014 EPAX [Member] USD ($)	Sep. 30, 2013 EPAX [Member] USD ($)	Dec. 31, 2013 EPAX [Member]	Sep. 30, 2014 Commitments to Extend Credit [Member] USD ($)
Business Acquisition [Line Items]
Planned aggregate purchase price to acquire business	$ 1,500,000,000	8,500,000,000
Planned aggregate purchase price net of debt	300,000,000
Business Combination, Acquisition Related Costs	4,300,000		15,200,000	0	15,200,000	0	0	4,600,000	0	4,600,000
Business Acquisition, Percentage of Voting Interests Acquired											100.00%
Derivative, Gain (Loss) on Derivative, Net			21,200,000	0	21,200,000	0
Medium-term Notes	2,000,000,000											2,000,000,000
Line of Credit Facility, Current Borrowing Capacity	1,500,000,000											1,500,000,000
Payments to Acquire Businesses, Gross										$ 339,600,000