Pension And Postretirement Benefits (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Qualifying employees receive additional contribution, percentage	2.00%
Percentage of annual contribution to each eligible participant's gross compensation	3.00%
Percentage of non-matching contribution to participants	3.00%
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated net gain/loss that will be amortized from accumulated other comprehensive income into net periodic benefit cost	12,400,000
Estimated net gain/loss that will be amortized from accumulated other compreshensive income into net peridoic benefit cost, prior service cost	100,000
Defined benefit plans contribution by the company	24,467,000	14,703,000
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated net gain/loss that will be amortized from accumulated other comprehensive income into net periodic benefit cost	600,000
Estimated net gain/loss that will be amortized from accumulated other compreshensive income into net peridoic benefit cost, prior service cost	200,000
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	51.00%	55.00%
Target plan asset allocation range minimum	35.00%
Target plan asset allocation range maximum	75.00%
Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	27.00%	28.00%
Target plan asset allocation range minimum	20.00%
Target plan asset allocation range maximum	50.00%
Alternative assets/Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	20.00%	14.00%
Target plan asset allocation range minimum	0.00%
Target plan asset allocation range maximum	20.00%
Money market [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	2.00%	3.00%
Target plan asset allocation range minimum	0.00%
Target plan asset allocation range maximum	10.00%
Common Stock [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	4.00%	5.00%
Money Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans contribution by the company	1,100,000	2,200,000	2,200,000
Savings And Investment Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans contribution by the company	6,900,000	6,700,000	6,400,000
2% Non-Matching Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans contribution by the company	3,500,000	3,300,000	3,300,000
Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	11.00%
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan employees, percentage	21.00%
Expected rate of return on assets assumption reflected as a long-term asset allocation	7.75%
U.S. [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	7.75%	7.75%	8.25%
U.S. [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	61.00%
U.S. [Member] | Equity securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	25.00%
U.S. [Member] | Equity securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	75.00%
U.S. [Member] | Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	14.00%
U.S. [Member] | Fixed income securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	15.00%
U.S. [Member] | Fixed income securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	35.00%
U.S. [Member] | Alternative assets/Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	22.00%
U.S. [Member] | Alternative assets/Other [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	10.00%
U.S. [Member] | Alternative assets/Other [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	35.00%
U.S. [Member] | Cash [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	0.00%
U.S. [Member] | Cash [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	10.00%
U.S. [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	3.00%
Non-U.S. [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on assets assumption reflected as a long-term asset allocation	7.01%	7.01%	7.00%
Non-U.S. [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	42.00%
Non-U.S. [Member] | Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage		39.00%
Non-U.S. [Member] | Alternative assets/Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage		17.00%
Non-U.S. [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage		2.00%
Scenario, Forecast [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected cash contribution based on current actuarial calculations in 2012				17,000,000
Scenario, Forecast [Member] | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected cash contribution based on current actuarial calculations in 2012				$ 1,000,000