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FINANCING ARRANGEMENTS - ADDITIONAL INFORMATION (Details) |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 24, 2019 JPY (¥) | May 28, 2019 USD ($) | Dec. 31, 2019 USD ($) | Jul. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jul. 27, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Notes payable and current portion of long-term debt |  |  | $ 2,300,000 |  | $ 92,400,000 |
Total unused lines of credit |  |  | 735,900,000 |  |  |
Line of Credit | Corporate commercial paper facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facilities, maximum borrowing capacity |  |  | 500,000,000.0 |  |  |
Notes payable and current portion of long-term debt |  |  | 0 |  | $ 67,800,000 |
Average amount of short-term debt outstanding during the year |  |  | $ 38,100,000 |  |  |
Amended And Extended Multicurrency Revolving Credit Facility | Line of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facilities, maximum borrowing capacity |  |  |  | $ 700,000,000.0 |  | $ 700,000,000.0
PNC Term Loan | Term Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Extinguishment of debt, amount |  | $ 131,300,000 |  |  |  |
Private Placement Note Purchase Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument face amount | ¥ | ¥ 12,500,000,000 |  |  |  |  |
Debt instrument, term | 12 years |  |  |  |  |
Debt instrument,interest rate, stated percentage | 0.99% |  |  |  |  |

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