Pension and Postretirement Plans (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 02, 2011	Jan. 03, 2010
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets at end of year	$ 1,816,577,000	$ 1,651,958,000
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	1,113,205,000	1,031,371,000
Service cost	27,619,000	26,976,000	29,214,000
Interest cost	60,033,000	60,329,000	56,994,000
Amendments	2,776,000	5,295,000
Actuarial loss (gain)	140,126,000	53,822,000
Benefits paid and other	(64,444,000)	(64,588,000)
Benefit obligation at end of year	1,279,315,000	1,113,205,000	1,031,371,000
Fair value of assets at beginning of year	1,651,958,000	1,440,816,000
Actual return on plan assets	229,063,000	275,730,000
Employer contributions and other	0	0	0
Benefits paid and other	(64,444,000)	(64,588,000)
Fair value of assets at end of year	1,816,577,000	1,651,958,000	1,440,816,000
Funded status	537,262,000	538,753,000
Supplemental Executive Retirement Plan (SERP) [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	79,403,000	73,845,000
Service cost	1,655,000	1,381,000	1,334,000
Interest cost	4,342,000	4,244,000	4,128,000
Amendments	369,000	0	0
Actuarial loss (gain)	9,059,000	2,847,000
Benefits paid and other	(3,114,000)	(2,914,000)
Benefits paid and other	(1,965,000)
Benefit obligation at end of year	92,863,000	79,403,000	73,845,000
Fair value of assets at beginning of year	0	0
Employer contributions and other	3,114,000	2,914,000
Benefits paid and other	(3,114,000)	(2,914,000)
Fair value of assets at end of year	0	0	0
Funded status	(92,863,000)	(79,403,000)
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	68,818,000	79,031,000
Service cost	2,872,000	3,275,000	3,871,000
Interest cost	3,063,000	3,934,000	4,168,000
Amendments	0	(6,336,000)
Actuarial loss (gain)	(55,000)	(3,073,000)
Curtailment gain	0	(3,630,000)
Benefits paid, net of Medicare subsidy	(2,286,000)	(4,383,000)
Benefit obligation at end of year	72,412,000	68,818,000	79,031,000
Fair value of assets at beginning of year	0	0
Employer contributions and other	2,286,000	4,383,000
Benefits paid, net of Medicare subsidy	(2,286,000)	(4,383,000)
Fair value of assets at end of year	0	0	0
Funded status	$ (72,412,000)	$ (68,818,000)