Pension Plans and Postretirement Benefits (Details Textual) (USD $)	12 Months Ended								12 Months Ended									0 Months Ended		12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011	Dec. 30, 2012 Pension Benefits [Member]	Dec. 30, 2012 Pension Benefits Domestic Plans [Member]	Jan. 01, 2012 Pension Benefits Domestic Plans [Member]	Jan. 02, 2011 Pension Benefits Domestic Plans [Member]	Apr. 19, 2011 Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Pension Benefits Foreign Plans [Member]	Jan. 01, 2012 Pension Benefits Foreign Plans [Member]	Jan. 02, 2011 Pension Benefits Foreign Plans [Member]	Dec. 30, 2012 Postretirement Plans [Member]	Jan. 01, 2012 Postretirement Plans [Member]	Jan. 02, 2011 Postretirement Plans [Member]	Dec. 30, 2012 U.S. Government Cost Accounting Standards [Member]	Jan. 01, 2012 U.S. Government Cost Accounting Standards [Member]	Jan. 02, 2011 U.S. Government Cost Accounting Standards [Member]	Jan. 07, 2013 Subsequent Event [Member]	Jan. 01, 2013 Subsequent Event [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Equity Securities [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Equity Securities [Member] Pension Benefits Foreign Plans [Member]	Dec. 30, 2012 Debt Securities [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Debt Securities and Other [Member] Pension Benefits Foreign Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 1 [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 1 [Member] Pension Benefits Foreign Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 2 [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 2 [Member] Pension Benefits Foreign Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 3 [Member] Pension Benefits Domestic Plans [Member]	Dec. 30, 2012 Fair Value, Inputs, Level 3 [Member] Pension Benefits Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employees under defined benefit pension plan					22.00%
Assumed discount rate on plan liabilities					5.50%	6.15%		5.90%											4.40%
Projected long-term rate of return on plan assets					8.25%	8.25%
Net periodic pension expense	$ 6,600,000	$ 6,700,000	$ 4,800,000		$ 6,600,000	$ 6,700,000	$ 4,800,000		$ 400,000	$ 0	$ 100,000	$ (100,000)	$ (100,000)	$ 0
Pension expense allocated to contracts pursuant to U.S. Government Cost Accounting Standards															12,700,000	12,600,000	9,600,000
Pretax contribution	92,800,000	69,000,000			92,800,000	69,000,000			400,000	300,000								83,000,000
Defined Benefit Plan, Settlements, Plan Assets					32,800,000
Employer contributions to 401(k) plans	8,200,000	7,500,000	7,400,000
Non-cash reduction to stockholders' equity	254,300,000	204,900,000
Deferred tax on non-cash reductions to stockholders' equity	159,900,000	129,800,000
Net periodic benefit cost expected to be recognized for the pension plans, net loss				40,700,000								(300,000)
Net periodic benefit cost expected to be recognized for the pension plans, net prior service credit				4,600,000								500,000
Target allocation of plan assets																				70.00%	60.00%	30.00%	40.00%
Target allocation of plan assets, minimum																				45.00%
Target allocation of plan assets, maximum																				75.00%
Fair value of plan assets					793,300,000	678,900,000	657,600,000		42,300,000	26,800,000	29,700,000													446,600,000	31,000,000	339,000,000	11,300,000	2,800,000	0
Unrecognized net (gain) loss					(450,700,000)	(377,800,000)			(5,700,000)	(4,500,000)		3,700,000	4,000,000
Unrecognized prior service cost					37,800,000	42,400,000			0	0		700,000	1,200,000
Assumed rate of increase in the per capita cost of covered benefits	7.50%
Ultimate health care cost trend rate, 2018 and thereafter	5.00%
Effect of one percentage point increase in assumed health care cost trend rates on annual service and interest costs (increase of less than $0.1 million)	100,000
Effect of one percentage point increase in assumed health care cost trend rates on postretirement benefit obligation	500,000
Effect of one percentage point decrease in assumed health care cost trend rates on annual service and interest costs (decrease of less than $0.1 million)	100,000
Effect of one percentage point decrease in assumed health care cost trend rates on postretirement benefit obligation	$ 500,000