Pensions and Other Benefit Programs (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Amortization of transition credit	$ (2,000)	[1],[2]	$ (2,000)	[1],[2]	$ (6,000)	[1],[2]	$ (6,000)	[1],[2]
Amortization of prior service cost	163,000	[1],[2]	(295,000)	[1],[2]	524,000	[1],[2]	(884,000)	[1],[2]
Amortization of net actuarial loss	12,136,000	[1],[2]	18,852,000	[1],[2]	44,038,000	[1],[2]	56,376,000	[1],[2]
Defined Benefit Plan Special Contributions					0		(95,000,000)
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer					10,000,000
Pension Plans, Defined Benefit | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	3,597,000		4,735,000		10,890,000		14,204,000
Interest cost	18,264,000		20,260,000		55,169,000		60,780,000
Expected return on plan assets	(26,781,000)		(30,406,000)		(80,908,000)		(91,218,000)
Amortization of transition credit	0		0		0		0
Amortization of prior service cost	95,000		200,000		318,000		602,000
Amortization of net actuarial loss	7,690,000		13,240,000		26,234,000		39,719,000
Settlement	145,000		0		1,561,000		0
Special termination benefits	0		0		(548,000)		0
Curtailment					814,000		0
Net periodic benefit cost	3,010,000		8,029,000		14,626,000		24,087,000
Defined Benefit Plan Contributions By Employer					9,000,000
Pension Plans, Defined Benefit | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	968,000		1,774,000		5,280,000		5,805,000
Interest cost	1,870,000		6,909,000		25,246,000		20,766,000
Expected return on plan assets	(3,266,000)		(8,069,000)		(31,187,000)		(24,133,000)
Amortization of transition credit	(2,000)		(2,000)		(6,000)		(6,000)
Amortization of prior service cost	28,000		28,000		84,000		83,000
Amortization of net actuarial loss	2,873,000		3,558,000		11,511,000		10,546,000
Settlement	0		192,000		0		442,000
Special termination benefits	(104,000)		0		(104,000)		0
Curtailment					0		0
Net periodic benefit cost	2,575,000		4,390,000		11,032,000		13,503,000
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	935,000		801,000		2,966,000		2,560,000
Interest cost	2,186,000		2,896,000		7,210,000		8,685,000
Amortization of prior service cost	40,000		(523,000)		122,000		(1,569,000)
Amortization of net actuarial loss	1,573,000		2,054,000		6,293,000		6,111,000
Net periodic benefit cost	4,734,000		5,228,000		16,591,000		15,787,000
Defined Benefit Plan Contributions By Employer	$ 5,000,000		$ 7,000,000		$ 21,000,000

[1] These items are included in the computation of net periodic costs of defined benefit pension plans and nonpension postretirement benefit plans (see Note 15 for additional details).

[2] Amounts in parentheses indicate debits (reductions) to income.