Retirement Plans and Postretirement Medical Benefits (Benefit Obligations and Funded Status) (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Historical Health Care Trend Rate	7.50%	7.50%	7.50%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year		7.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		5.00%
Nominal Rate of Return on Pension Plan		7.25%
Subsequent Event, Amount, Lower Range		$ 0
Defined Contribution Plan, Cost Recognized		30,000,000	30,000,000
Subsequent Event, Amount, Higher Range		15
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Nominal Rate of Return on Pension Plan		7.75%	8.00%	8.00%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Defined Benefit Plan, Benefit Obligation	285,828,000	282,857,000	285,828,000	280,386,000
Defined Benefit Plan, Service Cost		3,563,000	3,328,000	3,724,000
Defined Benefit Plan, Interest Cost		11,187,000	13,528,000	13,828,000
Defined Benefit Plan, Contributions by Plan Participants		9,547,000	8,861,000
Gross Benefits Paid Postretirement		(40,616,000)	(43,964,000)
Defined Benefit Plan, Actuarial Net (Gains) Losses		4,150,000	20,792,000
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Benefit Obligation		697,000	(648,000)
Defined Benefit Plan, Plan Amendments		8,501,000	0
Defined Benefit Plan, Curtailments		0	3,245,000
Defined Benefit Plan, Special Termination Benefits		0	300,000	191,000
Defined Benefit Plan, Benefits Paid		(40,616,000)	(43,964,000)
Defined Benefit Plan, Contributions by Employer		31,069,000	35,103,000
Defined Benefit Plan, Funded Status of Plan	(285,828,000)	(282,857,000)	(285,828,000)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(28,855,000)	(25,483,000)	(28,855,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(256,973,000)	(257,374,000)	(256,973,000)
Defined Benefit Plan, Amounts Recognized in Balance Sheet	(285,828,000)	(282,857,000)	(285,828,000)
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Nominal Rate of Return on Pension Plan		7.25%
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year		10,000,000
United States Pension Plans of US Entity, Defined Benefit [Member] | Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		1,426,536,000	1,385,174,000
Defined Benefit Plan, Contributions by Plan Participants		0	0
Defined Benefit Plan, Curtailments		0	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		0	0
Defined Benefit Plan, Benefits Paid		(130,339,000)	(131,009,000)
Defined Benefit Plan, Actual Return on Plan Assets		193,696,000	41,388,000
Defined Benefit Plan, Contributions by Employer		94,039,000	130,983,000
Defined Benefit Plan, Funded Status of Plan	(280,854,000)	(238,745,000)	(280,854,000)
United States Pension Plans of US Entity, Defined Benefit [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	40,000	175,000	40,000
Defined Benefit Plan, Accumulated Benefit Obligation	1,684,050,000	1,802,811,000	1,684,050,000
Defined Benefit Plan, Benefit Obligation	1,707,390,000	1,822,677,000	1,707,390,000	1,632,286,000
Defined Benefit Plan, Service Cost		18,939,000	19,450,000	23,157,000
Defined Benefit Plan, Interest Cost		81,040,000	87,738,000	89,602,000
Defined Benefit Plan, Contributions by Plan Participants		0	0
Defined Benefit Plan, Actuarial Net (Gains) Losses		145,641,000	94,495,000
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Benefit Obligation		0	0
Defined Benefit Plan, Curtailments		6,000	2,941,000
Defined Benefit Plan, Special Termination Benefits		0	1,489,000
Defined Benefit Plan, Benefits Paid		(130,339,000)	(131,009,000)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(11,323,000)	(7,456,000)	(11,323,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(269,571,000)	(231,464,000)	(269,571,000)
Defined Benefit Plan, Amounts Recognized in Balance Sheet	(280,854,000)	(238,745,000)	(280,854,000)
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Nominal Rate of Return on Pension Plan		7.25%
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year		20,000,000
Foreign Pension Plans, Defined Benefit [Member] | Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		438,848,000	450,683,000
Defined Benefit Plan, Contributions by Plan Participants		1,106,000	1,868,000
Defined Benefit Plan, Curtailments		(1,489,000)	0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets		17,353,000	(3,480,000)
Defined Benefit Plan, Benefits Paid		(21,504,000)	(21,361,000)
Defined Benefit Plan, Actual Return on Plan Assets		44,928,000	(7,478,000)
Defined Benefit Plan, Contributions by Employer		30,089,000	18,616,000
Defined Benefit Plan, Funded Status of Plan	(143,056,000)	(154,495,000)	(143,056,000)
Foreign Pension Plans, Defined Benefit [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	888,000	530,000	888,000
Defined Benefit Plan, Accumulated Benefit Obligation	543,599,000	648,439,000	543,599,000
Defined Benefit Plan, Benefit Obligation	581,904,000	663,826,000	581,904,000	541,241,000
Defined Benefit Plan, Service Cost	7,310,000	7,763,000	7,310,000	6,907,000
Defined Benefit Plan, Interest Cost	28,329,000	27,793,000	28,329,000	27,507,000
Defined Benefit Plan, Contributions by Plan Participants		1,106,000	1,868,000
Defined Benefit Plan, Actuarial Net (Gains) Losses		45,537,000	30,648,000
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Benefit Obligation		22,115,000	(6,424,000)
Defined Benefit Plan, Curtailments		(1,489,000)	16,000
Defined Benefit Plan, Special Termination Benefits		601,000	277,000
Defined Benefit Plan, Benefits Paid		(21,504,000)	(21,361,000)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(852,000)	(967,000)	(852,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(143,092,000)	(154,058,000)	(143,092,000)
Defined Benefit Plan, Amounts Recognized in Balance Sheet	$ (143,056,000)	$ (154,495,000)	$ (143,056,000)