Shareholders' Equity and Comprehensive Earnings (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Amounts Reclassified from AOCI
Commodity contracts recorded in net sales	$ 2,172.3	$ 2,291.9	$ 4,095.4	$ 4,298.7
Commodity contracts and currency exchange contracts recorded in cost of sales	(1,898.5)	(2,036.0)	(3,695.7)	(3,825.4)
Interest rate contracts recorded in interest expense	(36.0)	(40.6)	(134.4)	(113.9)
Earnings before taxes	237.8	215.3	265.3	359.4
Tax benefit (expense) on amounts reclassified into earnings	(78.4)	(60.2)	(78.9)	(99.8)
Net earnings	160.8	156.3	188.3	261.2
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amounts Reclassified from AOCI
Earnings before taxes	(0.4)	(7.7)	(2.0)	(14.7)
Tax benefit (expense) on amounts reclassified into earnings	0.4	1.2	1.1	2.1
Net earnings		(6.5)	(0.9)	(12.6)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contracts
Amounts Reclassified from AOCI
Commodity contracts recorded in net sales	2.2	(1.3)	0.8	(0.5)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contract and currency exchange contracts
Amounts Reclassified from AOCI
Commodity contracts and currency exchange contracts recorded in cost of sales	(2.7)	(6.4)	(2.7)	(13.9)
Effective Derivatives (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Interest rate swap agreements
Amounts Reclassified from AOCI
Interest rate contracts recorded in interest expense	0.1		(0.1)	(0.3)
Pension and Other Postretirement Benefits (Net of Tax) | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amounts Reclassified from AOCI
Prior service income (cost)	0.6	0.1	1.0	0.2
Actuarial gains (losses)	(11.4)	(8.6)	(23.7)	(17.1)
Earnings before taxes	(10.8)	(8.5)	(22.7)	(16.9)
Tax benefit (expense) on amounts reclassified into earnings	3.9	3.1	8.3	6.2
Net earnings	$ (6.9)	$ (5.4)	$ (14.4)	$ (10.7)