Pension And Other Postretirement Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage employees contribution of covered compensation annually	4.00%
Maximum percentage employee benefit regarding Vocollect plan	50
Maximum portion of contributions matched	80.00%
Matching contribution	$ 4,200,000	$ 2,700,000
Recorded gain on curtailments			700,000
Common stock, shares	59,717,000	60,191,000
Alternative investments	2,000,000	3,300,000
Defined benefit plan health care cost trend rate projected decrease period, years	17
Effect of one-percentage-point increase in the assumed health care cost trend rate on postretirement benefit obligation	100,000
U.S. Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Common stock, shares	31,475	31,475
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation discount rate	4.30%	5.00%
Weighted average discount rates, net periodic benefit cost	5.00%	5.50%	6.40%
Assumed health care cost trend rate for fiscal year 2011	8.70%
Health care cost trend rate in future period	4.50%
Effect of one-percentage-point decrease in the assumed health care cost trend rate on postretirement benefit obligation	0
Expected future benefit payments in year one	300,000
Expected future benefit payments in year two	300,000
Expected future benefit payments in year three	300,000
Expected future benefit payments in year four	300,000
Expected future benefit payments in year five	300,000
Expected future benefit payments in five fiscal years thereafter	1,300,000
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	261,255,000	227,207,000
Expect to contribute in next fiscal year	11,700,000
Expected long term rate of return of asset	7.75%	8.20%	8.00%
Benefit obligation discount rate	4.65%	5.43%
Weighted average discount rates, net periodic benefit cost	5.44%	6.04%	7.31%
Expected future benefit payments in year one	9,318,000
Expected future benefit payments in year two	9,982,000
Expected future benefit payments in year three	10,414,000
Expected future benefit payments in year four	11,158,000
Expected future benefit payments in year five	11,916,000
Expected future benefit payments in five fiscal years thereafter	70,317,000
Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	48,889,000	45,683,000
Expect to contribute in next fiscal year	1,200,000
Expected long term rate of return of asset	5.29%	5.41%	5.41%
Benefit obligation discount rate	4.63%	5.13%
Weighted average discount rates, net periodic benefit cost	5.10%	5.32%	5.79%
Expected future benefit payments in year one	2,208,000
Expected future benefit payments in year two	2,252,000
Expected future benefit payments in year three	2,297,000
Expected future benefit payments in year four	2,343,000
Expected future benefit payments in year five	2,390,000
Expected future benefit payments in five fiscal years thereafter	$ 12,558,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension obligations pay out	20
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension obligations pay out	30