Shareholders' Equity and Comprehensive Earnings (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Amounts Reclassified from AOCI
Net sales	$ 1,991.0	$ 2,042.7
Cost of sales	(1,848.0)	(1,860.7)
Interest expense	(44.8)	(60.4)
Earnings before taxes	98.2	121.6
Tax benefit (expense) on amounts reclassifed into earnings	(18.1)	(28.0)
Net earnings	79.4	93.1
Gain (losses) on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amounts Reclassified from AOCI
Earnings before taxes	(5.2)
Tax benefit (expense) on amounts reclassifed into earnings	1.7
Net earnings	(3.5)
Gain (losses) on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contracts
Amounts Reclassified from AOCI
Net sales	(0.6)
Gain (losses) on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Commodity contract and currency exchange contracts
Amounts Reclassified from AOCI
Cost of sales	(4.3)
Gain (losses) on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss) | Interest rate contracts
Amounts Reclassified from AOCI
Interest expense	(0.3)
Amortization of pension and other postretirement benefits | Amount Reclassified from Accumulated Other Comprehensive Earnings (Loss)
Amounts Reclassified from AOCI
Prior service costs	(0.1)
Actuarial gains (losses)	11.9
Earnings before taxes	11.8
Tax benefit (expense) on amounts reclassifed into earnings	(4.6)
Net earnings	$ 7.2