Pension and Non-pension Postretirement Benefits (Net Benefit Costs) (Details) (USD $)	3 Months Ended				12 Months Ended	3 Months Ended									3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Defined Benefit Pension Plans and SERP [Member]	Mar. 31, 2012 Defined Benefit Pension Plans and SERP [Member]	Mar. 31, 2013 U.S. Plans [Member]	Mar. 31, 2012 U.S. Plans [Member]	Mar. 31, 2013 Non-U.S. Plans [Member]	Mar. 31, 2012 Non-U.S. Plans [Member]	Mar. 31, 2013 Non-Pension Postretirement Benefit Plans [Member]	Mar. 31, 2012 Non-Pension Postretirement Benefit Plans [Member]	Jan. 02, 2013 Non-Pension Postretirement Benefit Plans [Member]	Mar. 31, 2013 U.S. Plans [Member]	Mar. 31, 2012 U.S. Plans [Member]	Mar. 31, 2013 Non-U.S. Plans [Member]	Mar. 31, 2012 Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost						$ 2,000,000	$ 1,997,000	$ 1,278,000	$ 1,555,000	$ 722,000	$ 442,000	$ 392,000	$ 368,000		$ 392,000	$ 368,000	$ 0	$ 0
Interest cost						4,737,000	5,275,000	3,481,000	4,019,000	1,256,000	1,256,000	724,000	883,000		701,000	857,000	23,000	26,000
Expected return on plan assets						(6,080,000)	(5,092,000)	(5,599,000)	(4,485,000)	(481,000)	(607,000)
Amortization of unrecognized:
Prior service cost						355,000	587,000	293,000	521,000	62,000	66,000	34,000	105,000		34,000	105,000	0	0
Loss / (gain)						2,325,000	1,936,000	2,087,000	1,801,000	238,000	135,000	290,000	229,000		291,000	229,000	(1,000)	0
Settlement charge						0	420,000	0	420,000	0	0
Pension expense or non-pension postretirement benefit expense						3,337,000	5,123,000	1,540,000	3,831,000	1,797,000	1,292,000	1,440,000	1,585,000		1,418,000	1,559,000	22,000	26,000
Settlement charge	4,431,000	(125,000)	0	0	4,306,000		400,000
Defined Benefit Plan, Contributions [Abstract]
Employer contributions made to defined benefit plans						700,000						1,000,000
Estimated employer contributions to defined benefit plans in remainder of 2013						5,700,000
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