Pension and Postretirement Plans (Obligation, Asset, and Funding Information) (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jan. 02, 2011
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets at end of year	$ 2,071,145,000	$ 1,816,577,000
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	1,279,315,000	1,113,205,000
Service cost	40,344,000	27,619,000	26,976,000
Interest cost	59,124,000	60,033,000	60,329,000
Amendments	8,508,000	2,776,000
Actuarial loss (gain)	144,286,000	140,126,000
Benefits paid and other	(65,255,000)	(64,444,000)
Benefit obligation at end of year	1,466,322,000	1,279,315,000	1,113,205,000
Fair value of assets at beginning of year	1,816,577,000	1,651,958,000
Actual return on plan assets	319,823,000	229,063,000
Employer contributions and other	0	0	0
Benefits paid and other	(65,255,000)	(64,444,000)
Fair value of assets at end of year	2,071,145,000	1,816,577,000	1,651,958,000
Funded status	604,823,000	537,262,000
Supplemental Executive Retirement Plan (SERP) [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	92,863,000	79,403,000
Service cost	1,467,000	1,655,000	1,381,000
Interest cost	4,241,000	4,342,000	4,244,000
Amendments	0	369,000	0
Actuarial loss (gain)	8,428,000	9,059,000
Benefits paid and other	(3,681,000)	(3,114,000)
Benefits paid and other	(2,937,000)	(1,965,000)
Benefit obligation at end of year	104,062,000	92,863,000	79,403,000
Fair value of assets at beginning of year	0	0
Employer contributions and other	3,681,000	3,114,000
Benefits paid and other	(3,681,000)	(3,114,000)
Fair value of assets at end of year	0	0	0
Funded status	(104,062,000)	(92,863,000)
Other Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at begining of year	72,412,000	68,818,000
Service cost	3,113,000	2,872,000	3,275,000
Interest cost	2,735,000	3,063,000	3,934,000
Actuarial loss (gain)	(11,493,000)	(55,000)
Curtailment loss	438,000	0
Benefits paid, net of Medicare subsidy	(3,337,000)	(2,286,000)
Benefit obligation at end of year	63,868,000	72,412,000	68,818,000
Fair value of assets at beginning of year	0	0
Employer contributions and other	3,337,000	2,286,000
Benefits paid, net of Medicare subsidy	(3,337,000)	(2,286,000)
Fair value of assets at end of year	0	0	0
Funded status	$ (63,868,000)	$ (72,412,000)