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RETIREMENT AND DEFERRED COMPENSATION PLANS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
United States      
Change in benefit obligation:      
Benefit obligation at beginning of year $ 255,457 $ 272,471  
Service cost 15,784 16,356 $ 14,278
Interest cost 6,970 6,366 7,046
Curtailment/Settlement 0 0  
Prior service cost 0 0  
Actuarial gain (92,724) (18,526)  
Benefits paid (21,615) (21,210)  
Foreign currency translation adjustment 0 0  
Benefit obligation at end of year 163,872 255,457 272,471
Change in plan assets:      
Fair value of plan assets at beginning of year 193,770 192,034  
Actual return on plan assets (25,517) 22,480  
Employer contribution 15,513 466  
Benefits paid (21,615) (21,210)  
Transfer 0 0  
Foreign currency translation adjustment 0 0  
Fair value of plan assets at end of year 162,151 193,770 192,034
Funded status at end of year (1,721) (61,687)  
Funded status amounts recognized in Consolidated Balance Sheet      
Non-current assets 9,304 0  
Current liabilities (515) (500)  
Non-current liabilities (10,510) (61,187)  
Funded status amount (1,721) (61,687)  
Amounts recognized in accumulated other comprehensive loss      
Net actuarial (gain) loss (3,338) 57,627  
Net prior service cost 0 0  
Tax effects 2,271 (12,873)  
Net amount recognized (1,067) 44,754  
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Current year actuarial gain (loss) 54,295 28,714 (33,335)
Amortization of net loss 6,670 10,099 5,684
Net amount recognized 60,965 38,813 (27,651)
Components of net periodic benefit cost:      
Service cost 15,784 16,356 14,278
Interest cost 6,970 6,366 7,046
Expected return on plan assets (12,912) (12,293) (12,248)
Amortization of net loss 6,670 10,099 5,684
Net periodic benefit cost 16,512 20,528 $ 14,760
Accumulated benefit obligation 152,400 236,300  
Projected benefit obligation ("PBO"), ABO, and fair value of plan assets for all pension plans with an ABO in excess of plan assets      
Projected benefit obligation 11,025 255,457  
Accumulated benefit obligation 10,087 236,295  
Fair value of plan assets 0 193,770  
PBO, ABO, and fair value of plan assets for all pension plans with a PBO in excess of plan assets      
Projected benefit obligation 11,025 255,457  
Accumulated benefit obligation 10,087 236,295  
Fair value of plan assets $ 0 $ 193,770  
Weighted-average assumptions used to determine benefit obligations      
Discount rate 5.15% 2.75% 2.40%
Rate of compensation increase 3.20% 3.17% 3.19%
Weighted-average assumptions used to determine net periodic benefit cost      
Discount rate 2.75% 2.40% 3.20%
Expected long-term return on plan assets 7.00% 7.00% 7.00%
Rate of compensation increase 3.20% 3.17% 4.00%
Plan assets, actual allocation percentage 100.00% 100.00%  
Plan Assets:      
Total investments $ 162,151 $ 193,770 $ 192,034
United States | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 193,770    
Fair value of plan assets at end of year 162,151 193,770  
Plan Assets:      
Total investments $ 162,151 $ 193,770  
United States | Equity securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 47.00% 48.00%  
Target allocation percentage 58.00%    
United States | Fixed income securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 27.00% 27.00%  
United States | Corporate debt securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 0.00% 0.00%  
United States | Investment Funds      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 0.00% 0.00%  
United States | Infrastructure      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 8.00% 8.00%  
United States | Hedge funds      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 10.00% 11.00%  
United States | Money market      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 1.00% 1.00%  
United States | Real estate      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 7.00% 5.00%  
United States | Fixed income securities and infrastructure      
Weighted-average assumptions used to determine net periodic benefit cost      
Target allocation percentage 42.00%    
United States | Fair Value, Inputs, Level 1, 2 and 3 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year $ 119,375    
Fair value of plan assets at end of year 96,041 $ 119,375  
Plan Assets:      
Total investments 96,041 119,375  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,864    
Fair value of plan assets at end of year 1,260 1,864  
Plan Assets:      
Total investments 1,260 1,864  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 82,927    
Fair value of plan assets at end of year 66,338 82,927  
Plan Assets:      
Total investments 66,338 82,927  
United States | Fair Value, Inputs, Level 1, 2 and 3 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 34,584    
Fair value of plan assets at end of year 28,443 34,584  
Plan Assets:      
Total investments 28,443 34,584  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 119,375    
Fair value of plan assets at end of year 96,041 119,375  
Plan Assets:      
Total investments 96,041 119,375  
United States | Level 1 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,864    
Fair value of plan assets at end of year 1,260 1,864  
Plan Assets:      
Total investments 1,260 1,864  
United States | Level 1 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,864    
Fair value of plan assets at end of year 1,260 1,864  
Plan Assets:      
Total investments 1,260 1,864  
United States | Level 1 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 82,927    
Fair value of plan assets at end of year 66,338 82,927  
Plan Assets:      
Total investments 66,338 82,927  
United States | Level 1 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 49,637    
Fair value of plan assets at end of year 37,537 49,637  
Plan Assets:      
Total investments 37,537 49,637  
United States | Level 1 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 9,112    
Fair value of plan assets at end of year 7,918 9,112  
Plan Assets:      
Total investments 7,918 9,112  
United States | Level 1 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 24,178    
Fair value of plan assets at end of year 20,883 24,178  
Plan Assets:      
Total investments 20,883 24,178  
United States | Level 1 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 34,584    
Fair value of plan assets at end of year 28,443 34,584  
Plan Assets:      
Total investments 28,443 34,584  
United States | Level 1 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 1 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 2 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Level 3 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
United States | Net Asset Value per Share | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 74,395    
Fair value of plan assets at end of year 66,110 74,395  
Plan Assets:      
Total investments 66,110 74,395  
Foreign Plans      
Change in benefit obligation:      
Benefit obligation at beginning of year 123,386 134,426  
Service cost 7,547 8,159 7,311
Interest cost 1,388 843 1,410
Curtailment/Settlement 68 5  
Prior service cost 813 0  
Actuarial gain (26,826) (6,489)  
Benefits paid (4,615) (4,555)  
Foreign currency translation adjustment (7,762) (9,003)  
Benefit obligation at end of year 93,999 123,386 134,426
Change in plan assets:      
Fair value of plan assets at beginning of year 85,421 85,087  
Actual return on plan assets (4,897) 2,811  
Employer contribution 1,871 7,966  
Benefits paid (4,615) (4,555)  
Transfer 0 124  
Foreign currency translation adjustment (5,257) (6,012)  
Fair value of plan assets at end of year 72,523 85,421 85,087
Funded status at end of year (21,476) (37,965)  
Funded status amounts recognized in Consolidated Balance Sheet      
Non-current assets 0 1,832  
Current liabilities (31) (33)  
Non-current liabilities (21,445) (39,764)  
Funded status amount (21,476) (37,965)  
Amounts recognized in accumulated other comprehensive loss      
Net actuarial (gain) loss 11,383 32,269  
Net prior service cost 1,150 509  
Tax effects (5,518) (11,049)  
Net amount recognized 7,015 21,729  
Changes in benefit obligations and plan assets recognized in other comprehensive income      
Current year actuarial gain (loss) 19,181 6,257 (2,530)
Current year prior service cost (818) 0 2,701
Transfer actuarial loss 17 0 0
Amortization of net loss 1,688 2,325 2,121
Amortization of prior service cost 177 166 398
Net amount recognized 20,245 8,748 2,690
Components of net periodic benefit cost:      
Service cost 7,547 8,159 7,311
Interest cost 1,388 843 1,410
Expected return on plan assets (2,728) (2,838) (2,620)
Amortization of net loss 1,688 2,325 2,121
Amortization of prior service cost 177 166 398
Net periodic benefit cost 8,072 8,655 8,620
Curtailment (24) 5 (8)
Total Net periodic benefit cost 8,048 8,660 $ 8,612
Accumulated benefit obligation 73,800 96,000  
Projected benefit obligation ("PBO"), ABO, and fair value of plan assets for all pension plans with an ABO in excess of plan assets      
Projected benefit obligation 54,455 89,595  
Accumulated benefit obligation 40,481 63,614  
Fair value of plan assets 34,446 49,916  
PBO, ABO, and fair value of plan assets for all pension plans with a PBO in excess of plan assets      
Projected benefit obligation 71,730 97,221  
Accumulated benefit obligation 52,173 69,630  
Fair value of plan assets $ 47,236 $ 56,228  
Weighted-average assumptions used to determine benefit obligations      
Discount rate 3.69% 1.09% 0.54%
Rate of compensation increase 3.21% 3.05% 3.05%
Weighted-average assumptions used to determine net periodic benefit cost      
Discount rate 1.20% 0.66% 1.12%
Expected long-term return on plan assets 3.53% 3.56% 3.59%
Rate of compensation increase 3.20% 3.05% 3.05%
Plan assets, actual allocation percentage 100.00% 100.00%  
Plan Assets:      
Total investments $ 72,523 $ 85,421 $ 85,087
Foreign Plans | Equity securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 5.00% 6.00%  
Foreign Plans | Fixed income securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 1.00% 1.00%  
Foreign Plans | Corporate debt securities      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 1.00% 2.00%  
Foreign Plans | Investment Funds      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 92.00% 90.00%  
Target allocation percentage 100.00%    
Foreign Plans | Infrastructure      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 0.00% 0.00%  
Foreign Plans | Hedge funds      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 0.00% 0.00%  
Foreign Plans | Money market      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 1.00% 1.00%  
Foreign Plans | Real estate      
Weighted-average assumptions used to determine net periodic benefit cost      
Plan assets, actual allocation percentage 0.00% 0.00%  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year $ 85,421    
Fair value of plan assets at end of year 72,523 $ 85,421  
Plan Assets:      
Total investments 72,523 85,421  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 547    
Fair value of plan assets at end of year 516 547  
Plan Assets:      
Total investments 516 547  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 4,881    
Fair value of plan assets at end of year 3,769 4,881  
Plan Assets:      
Total investments 3,769 4,881  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 772    
Fair value of plan assets at end of year 723 772  
Plan Assets:      
Total investments 723 772  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,413    
Fair value of plan assets at end of year 1,135 1,413  
Plan Assets:      
Total investments 1,135 1,413  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 77,808    
Fair value of plan assets at end of year 66,380 77,808  
Plan Assets:      
Total investments 66,380 77,808  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Fair Value, Inputs, Level 1, 2 and 3 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 1 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 33,994    
Fair value of plan assets at end of year 28,095 33,994  
Plan Assets:      
Total investments 28,095 33,994  
Foreign Plans | Level 1 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 547    
Fair value of plan assets at end of year 516 547  
Plan Assets:      
Total investments 516 547  
Foreign Plans | Level 1 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 1 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 539    
Fair value of plan assets at end of year 505 539  
Plan Assets:      
Total investments 505 539  
Foreign Plans | Level 1 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 8    
Fair value of plan assets at end of year 11 8  
Plan Assets:      
Total investments 11 8  
Foreign Plans | Level 1 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 4,881    
Fair value of plan assets at end of year 3,769 4,881  
Plan Assets:      
Total investments 3,769 4,881  
Foreign Plans | Level 1 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 1 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 1 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 4,881    
Fair value of plan assets at end of year 3,769 4,881  
Plan Assets:      
Total investments 3,769 4,881  
Foreign Plans | Level 1 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 772    
Fair value of plan assets at end of year 723 772  
Plan Assets:      
Total investments 723 772  
Foreign Plans | Level 1 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,413    
Fair value of plan assets at end of year 1,135 1,413  
Plan Assets:      
Total investments 1,135 1,413  
Foreign Plans | Level 1 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 1,413    
Fair value of plan assets at end of year 1,135 1,413  
Plan Assets:      
Total investments 1,135 1,413  
Foreign Plans | Level 1 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 26,381    
Fair value of plan assets at end of year 21,952 26,381  
Plan Assets:      
Total investments 21,952 26,381  
Foreign Plans | Level 1 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 4,576    
Fair value of plan assets at end of year 5,221 4,576  
Plan Assets:      
Total investments 5,221 4,576  
Foreign Plans | Level 1 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 20,810    
Fair value of plan assets at end of year 15,901 20,810  
Plan Assets:      
Total investments 15,901 20,810  
Foreign Plans | Level 1 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 995    
Fair value of plan assets at end of year 830 995  
Plan Assets:      
Total investments 830 995  
Foreign Plans | Level 2 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 51,427    
Fair value of plan assets at end of year 44,428 51,427  
Plan Assets:      
Total investments 44,428 51,427  
Foreign Plans | Level 2 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 51,427    
Fair value of plan assets at end of year 44,428 51,427  
Plan Assets:      
Total investments 44,428 51,427  
Foreign Plans | Level 2 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 2 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 51,427    
Fair value of plan assets at end of year 44,428 51,427  
Plan Assets:      
Total investments 44,428 51,427  
Foreign Plans | Level 3 | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Cash and Short Term Securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Cash and Short Term Securities | USD | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Cash and Short Term Securities | EUR | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Cash and Short Term Securities | Others | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Equity securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | U.S. Large Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | U.S. Small Cap Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | International Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Fixed income securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Corporate debt securities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Euro Corporate Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Investment Funds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Mutual Funds in Equities | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Mutual Funds in Bonds | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments 0 0  
Foreign Plans | Level 3 | Mutual Funds Diversified | Fair Value, Recurring      
Change in plan assets:      
Fair value of plan assets at beginning of year 0    
Fair value of plan assets at end of year 0 0  
Plan Assets:      
Total investments $ 0 $ 0