Pensions and Other Benefit Programs (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 2,501,000	$ 2,793,000
Interest cost			10,158,000	10,367,000
Amortization of prior service (credit) cost			(1,878,000)	(1,883,000)
Amortization of net loss			5,750,000	5,096,000
Curtailment			(1,652,000)	0
Special termination benefits			157,000	0
Net periodic benefit cost			18,340,000	16,373,000
Defined Benefit Plans [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4,862,000	5,770,000	14,587,000	17,312,000
Interest cost	21,935,000	22,523,000	65,805,000	67,572,000
Expected return on plan assets	(30,765,000)	(30,772,000)	(92,294,000)	(92,320,000)
Amortization of transition credit	0	0	0	0
Amortization of prior service (credit) cost	36,000	(644,000)	109,000	(1,933,000)
Amortization of net loss	9,381,000	8,059,000	28,142,000	24,177,000
Settlement	0	521,000	0	3,961,000
Curtailment	(435,000)	0	(2,531,000)	0
Special termination benefits	229,000	0	989,000	0
Net periodic benefit cost	6,113,000	5,457,000	19,869,000	18,769,000
Defined Benefit Plan Contributions By Employer			129,000,000
Defined Benefit Plans [Member] | Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,836,000	1,620,000	5,650,000	5,114,000
Interest cost	7,089,000	6,895,000	21,344,000	20,523,000
Expected return on plan assets	(7,945,000)	(7,206,000)	(23,978,000)	(21,476,000)
Amortization of transition credit	(2,000)	(2,000)	(6,000)	(6,000)
Amortization of prior service (credit) cost	42,000	69,000	130,000	208,000
Amortization of net loss	2,782,000	2,594,000	8,307,000	7,595,000
Settlement	0	0	0	0
Curtailment	0	0	(224,000)	0
Special termination benefits	0	0	10,000	0
Net periodic benefit cost	3,802,000	3,970,000	11,681,000	11,958,000
Defined Benefit Plan Contributions By Employer			18,000,000
Non Pension Postretirement Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	834,000	931,000
Interest cost	3,387,000	3,455,000
Amortization of prior service (credit) cost	(626,000)	(628,000)
Amortization of net loss	1,917,000	1,699,000
Curtailment	(416,000)	0
Special termination benefits	44,000	0
Net periodic benefit cost	5,972,000	5,457,000
Defined Benefit Plan Contributions By Employer	$ 9,000,000	$ 12,000,000	$ 23,000,000	$ 25,000,000