Pension And Other Postretirement Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage employees contribution of covered compensation annually	4.00%
Maximum portion of contributions matched	80.00%
Matching contribution	$ 4,000,000	$ 4,200,000	$ 2,700,000
Common stock, shares	60,354,000	59,717,000
Alternative investments		2,000,000
Defined benefit plan health care cost trend rate projected decrease period, years	16 years
Expected future benefit payments in five fiscal years thereafter	961,000
U.S. Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Common stock, shares	31,475
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	2,737,000	3,313,000	3,313,000
Benefit obligation discount rate	3.50%	4.30%
Weighted average discount rates, net periodic benefit cost	4.30%	5.00%	5.50%
Assumed health care cost trend rate for fiscal year 2011	8.10%
Health care cost trend rate in future period	4.50%
U.S. Defined Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	286,188,000	261,255,000	227,207,000
Accumulated benefit obligation	286,188,000	261,255,000
Expect to contribute in next fiscal year	4,000,000
Expected long term rate of return of asset	7.30%	7.75%	8.20%
Benefit obligation discount rate	4.22%	4.65%
Weighted average discount rates, net periodic benefit cost	4.65%	5.44%	6.04%
Expected future benefit payments in five fiscal years thereafter	75,759,000
Non U.S. Defined Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	52,439,000	48,889,000	45,683,000
Accumulated benefit obligation	52,439,000	48,889,000
Expect to contribute in next fiscal year	3,300,000
Expected long term rate of return of asset	5.33%	5.29%	5.41%
Benefit obligation discount rate	4.07%	4.63%
Weighted average discount rates, net periodic benefit cost	4.68%	5.10%	5.32%
Expected future benefit payments in five fiscal years thereafter	$ 14,879,000
Minimum
Defined Benefit Plan Disclosure [Line Items]
Pension obligations pay out	20 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Pension obligations pay out	30 years