Employee and Retiree Benefit Plans (Fair Value Measurements of Retirement Plan Assets within Fair Value of Hierarchy) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 327,749	$ 358,673
Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	193,933	202,305
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	521,682	560,978	$ 533,108
Level 1 [Member] | Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	85,341	103,953
Level 1 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	734	1,363
Level 1 [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	86,075	105,316
Level 2 [Member] | Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	208,479	220,768
Level 2 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	193,199	200,942
Level 2 [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	401,678	421,710
Level 3 [Member] | Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	33,929	33,952
Level 3 [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	33,929	33,952
Equity Securities [Member] | Domestic Plans [Member] | US Core Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	51,878	67,863
Equity Securities [Member] | Domestic Plans [Member] | U.S. Small/Midcap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	26,964	33,709
Equity Securities [Member] | Domestic Plans [Member] | Hedged Funds and Other Alternative Strategies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	50,878	52,905
Equity Securities [Member] | Domestic Plans [Member] | International Commingled Trust Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	72,205	75,702
Equity Securities [Member] | Domestic Plans [Member] | Emerging Market Commingled Equity Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	16,873	19,908
Equity Securities [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	104,718	106,694
Equity Securities [Member] | Level 1 [Member] | Domestic Plans [Member] | US Core Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	51,878	67,863
Equity Securities [Member] | Level 1 [Member] | Domestic Plans [Member] | U.S. Small/Midcap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	26,964	33,709
Equity Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | Hedged Funds and Other Alternative Strategies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	16,949	18,953
Equity Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | International Commingled Trust Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	72,205	75,702
Equity Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | Emerging Market Commingled Equity Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	16,873	19,908
Equity Securities [Member] | Level 2 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	104,718	106,694
Equity Securities [Member] | Level 3 [Member] | Domestic Plans [Member] | Hedged Funds and Other Alternative Strategies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	33,929	33,952
Fixed Income Securities [Member] | Domestic Plans [Member] | International Commingled Trust Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	15,332	17,559
Fixed Income Securities [Member] | Domestic Plans [Member] | U.S. Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	80,681	80,577
Fixed Income Securities [Member] | Domestic Plans [Member] | Emerging Market Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6,439	8,069
Fixed Income Securities [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	67,494	66,435
Fixed Income Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | International Commingled Trust Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	15,332	17,559
Fixed Income Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | U.S. Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	80,681	80,577
Fixed Income Securities [Member] | Level 2 [Member] | Domestic Plans [Member] | Emerging Market Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6,439	8,069
Fixed Income Securities [Member] | Level 2 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	67,494	66,435
Diversified Pooled Fund [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	20,987	27,813
Diversified Pooled Fund [Member] | Level 2 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	20,987	27,813
Cash and Equivalents [Member] | Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6,499	2,381
Cash and Equivalents [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	734	1,363
Cash and Equivalents [Member] | Level 1 [Member] | Domestic Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6,499	2,381
Cash and Equivalents [Member] | Level 1 [Member] | Foreign Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 734	$ 1,363