Pension and Non-pension Postretirement Benefits (Net Benefit Costs) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jan. 02, 2013
Amortization of unrecognized:
Settlement charge	$ 760,000	$ (125,000)	$ 1,475,000	$ (125,000)
Defined Benefit Pension Plans and SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,913,000	1,661,000	5,691,000	5,576,000
Interest cost	4,853,000	5,029,000	14,286,000	15,309,000
Expected return on plan assets	(6,118,000)	(5,535,000)	(18,299,000)	(15,671,000)
Amortization of unrecognized:
Prior service cost	358,000	564,000	1,066,000	1,735,000
Loss / (gain)	2,318,000	1,451,000	7,121,000	5,230,000
Settlement charge	760,000	93,000	1,475,000	550,000
Curtailment charge (credit)	0	(125,000)	0	(125,000)
Pension expense or non-pension postretirement benefit expense	4,084,000	3,138,000	11,340,000	12,604,000
Defined Benefit Plan, Contributions [Abstract]
Employer contributions made to defined benefit plans	1,200,000		4,000,000
Estimated employer contributions to defined benefit plans in remainder of 2013	1,800,000
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,184,000	1,543,000	3,554,000	4,468,000
Interest cost	3,582,000	3,702,000	10,564,000	11,548,000
Expected return on plan assets	(5,571,000)	(4,939,000)	(16,775,000)	(13,885,000)
Amortization of unrecognized:
Prior service cost	293,000	494,000	879,000	1,537,000
Loss / (gain)	2,095,000	1,302,000	6,445,000	4,822,000
Settlement charge	424,000	0	1,139,000	457,000
Curtailment charge (credit)	0	(125,000)	0	(125,000)
Pension expense or non-pension postretirement benefit expense	2,007,000	1,977,000	5,806,000	8,822,000
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	729,000	118,000	2,137,000	1,108,000
Interest cost	1,271,000	1,327,000	3,722,000	3,761,000
Expected return on plan assets	(547,000)	(596,000)	(1,524,000)	(1,786,000)
Amortization of unrecognized:
Prior service cost	65,000	70,000	187,000	198,000
Loss / (gain)	223,000	149,000	676,000	408,000
Settlement charge	336,000	93,000	336,000	93,000
Curtailment charge (credit)	0	0	0	0
Pension expense or non-pension postretirement benefit expense	2,077,000	1,161,000	5,534,000	3,782,000
Non-Pension Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	298,000	368,000	894,000	1,104,000
Interest cost	684,000	885,000	2,049,000	2,650,000
Amortization of unrecognized:
Prior service cost	35,000	105,000	105,000	316,000
Loss / (gain)	214,000	229,000	643,000	686,000
Pension expense or non-pension postretirement benefit expense	1,231,000	1,587,000	3,691,000	4,756,000
Defined Benefit Plan, Contributions [Abstract]
Employer contributions made to defined benefit plans	900,000		3,100,000
Estimated employer contributions to defined benefit plans in year 2013	4,700,000
Retirees subject to health reimbursement arrangement, minimum age					65 years
Life insurance benefit, maximum					10,000
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	298,000	368,000	893,000	1,103,000
Interest cost	655,000	857,000	1,966,000	2,570,000
Amortization of unrecognized:
Prior service cost	35,000	105,000	105,000	316,000
Loss / (gain)	214,000	229,000	643,000	687,000
Pension expense or non-pension postretirement benefit expense	1,202,000	1,559,000	3,607,000	4,676,000
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	1,000	1,000
Interest cost	29,000	28,000	83,000	80,000
Amortization of unrecognized:
Prior service cost	0	0	0	0
Loss / (gain)	0	0	0	(1,000)
Pension expense or non-pension postretirement benefit expense	$ 29,000	$ 28,000	$ 84,000	$ 80,000