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DEBT (Details) $ in Thousands, € in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 USD ($) | Sep. 30, 2019 EUR (€) | Sep. 30, 2019 USD ($) | Jan. 01, 2019 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 USD ($)
Long-Term Obligations |  |  |  |  |  |
Consolidated Leverage Ratio |  | 1.68 | 1.68 |  |  |
Consolidated Interest Coverage Ratio |  | 16.07 | 16.07 |  |  |
Long-term obligations gross including current maturities |  |  | $ 1,142,479 |  |  | $ 1,191,489
Current maturities of long-term obligations |  |  | (64,941) |  |  | (62,678)
Total long-term obligations |  |  | 1,077,538 |  |  | 1,128,811
Deferred Finance Costs, Net, Total |  |  | 2,385 |  |  | 2,818
Deferred debt issuance costs noncurrent |  |  | 2,385 |  |  | 2,818
Long-term obligations including current maturities |  |  | 1,140,094 |  |  | 1,188,671
Current maturities of long-term obligations |  |  | (64,941) | $ (65,309) |  | (62,678)
Long-term obligations, net of unamortized debt issuance costs |  |  | 1,075,153 | $ 1,129,238 |  | 1,125,993
Aggregate long-term maturities, excluding finance lease obligations |  |  |  |  |  |
Year One |  |  | 61,085 |  |  |
Year Two |  |  | 61,515 |  |  |
Year Three |  |  | 135,217 |  |  |
Year Four |  |  | 112,121 |  |  |
Year Five |  |  | 494,402 |  |  |
After Year Five |  |  | $ 250,582 |  |  |
Minimum |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Consolidated Interest Coverage Ratio |  | 3.00 | 3.00 |  |  |
Maximum |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Consolidated Leverage Ratio |  | 3.50 | 3.50 |  |  |
5-year revolving credit facility maturing in July 2022 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Revolving credit facility maximum borrowing capacity |  | € 150.0 | $ 300,000 |  |  |
Amount outstanding under line of credit | € |  | € 27.0 |  |  | € 69.0 |
Notes payable to banks |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Proceeds from debt | $ 280,000 |  |  |  |  |
Long-term obligations gross including current maturities |  |  | 168,000 |  |  | 224,000
Deferred Finance Costs, Net, Total |  |  | 428 |  |  | 541
Long-term obligations including current maturities |  |  | $ 167,572 |  |  | $ 223,459
Interest rate on notes (as a percent) | 1.36% | 1.36% | 1.36% |  | 1.36% | 1.36%
Floating interest rate prior to conversion to a fixed interest rate |  | 3.80% | 3.80% |  | 4.00% | 4.00%
Notes payable 0.00% - 10.90%, due in monthly and annual installments through 2028 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 19,907 |  |  | $ 15,531
Long-term obligations including current maturities |  |  | $ 19,907 |  |  | $ 15,531
Notes payable 0.00% - 10.90%, due in monthly and annual installments through 2028 | Minimum |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Interest rate on notes (as a percent) |  | 0.00% | 0.00% |  | 0.00% | 0.00%
Notes payable 0.00% - 10.90%, due in monthly and annual installments through 2028 | Maximum |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Interest rate on notes (as a percent) |  | 10.90% | 10.90% |  | 16.00% | 16.00%
Senior unsecured notes 3.2%, due in 2022 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 75,000 |  |  | $ 75,000
Deferred Finance Costs, Net, Total |  |  | 70 |  |  | 88
Long-term obligations including current maturities |  |  | $ 74,930 |  |  | $ 74,912
Interest rate on notes (as a percent) |  | 3.20% | 3.20% |  | 3.20% | 3.20%
Senior unsecured notes 3.5%, due in 2023 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 125,000 |  |  | $ 125,000
Deferred Finance Costs, Net, Total |  |  | 153 |  |  | 181
Long-term obligations including current maturities |  |  | $ 124,847 |  |  | $ 124,819
Interest rate on notes (as a percent) |  | 3.50% | 3.50% |  | 3.50% | 3.50%
Senior unsecured notes 0.98%, due in 2023 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 109,005 |  |  | $ 114,535
Deferred Finance Costs, Net, Total |  |  | 371 |  |  | 432
Long-term obligations including current maturities |  |  | $ 108,634 |  |  | $ 114,103
Interest rate on notes (as a percent) |  | 1.00% | 1.00% |  | 1.00% | 1.00%
Senior unsecured notes 3.4%, due in 2024 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 50,000 |  |  | $ 50,000
Deferred Finance Costs, Net, Total |  |  | 66 |  |  | 76
Long-term obligations including current maturities |  |  | $ 49,934 |  |  | $ 49,924
Interest rate on notes (as a percent) |  | 3.40% | 3.40% |  | 3.40% | 3.40%
Senior unsecured notes 3.5%, due in 2024 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 100,000 |  |  | $ 100,000
Deferred Finance Costs, Net, Total |  |  | 153 |  |  | 181
Long-term obligations including current maturities |  |  | $ 99,847 |  |  | $ 99,819
Interest rate on notes (as a percent) |  | 3.50% | 3.50% |  | 3.50% | 3.50%
Senior unsecured notes 1.17%, due in 2024 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 218,010 |  |  | $ 229,070
Deferred Finance Costs, Net, Total |  |  | 782 |  |  | 904
Long-term obligations including current maturities |  |  | $ 217,228 |  |  | $ 228,166
Interest rate on notes (as a percent) |  | 1.20% | 1.20% |  | 1.20% | 1.20%
Senior unsecured notes 3.6%, due in 2025 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 125,000 |  |  | $ 125,000
Deferred Finance Costs, Net, Total |  |  | 181 |  |  | 207
Long-term obligations including current maturities |  |  | $ 124,819 |  |  | $ 124,793
Interest rate on notes (as a percent) |  | 3.60% | 3.60% |  | 3.60% | 3.60%
Senior unsecured notes 3.6%, due in 2026 |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 125,000 |  |  | $ 125,000
Deferred Finance Costs, Net, Total |  |  | 181 |  |  | 208
Long-term obligations including current maturities |  |  | $ 124,819 |  |  | $ 124,792
Interest rate on notes (as a percent) |  | 3.60% | 3.60% |  | 3.60% | 3.60%
Financial lease liabilities |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  | $ 27,557 |  |  |
Long-term obligations including current maturities |  |  | $ 27,557 |  |  |
Capital lease obligations |  |  |  |  |  |
Long-Term Obligations |  |  |  |  |  |
Long-term obligations gross including current maturities |  |  |  |  |  | $ 8,353
Long-term obligations including current maturities |  |  |  |  |  | $ 8,353

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