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Significant Accounting Policies - Narrative (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) contract | Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract | May 09, 2019 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of derivative contracts outstanding | contract | 0 | 0 | 0 |
Allowance for doubtful accounts | $ 36,500,000 | $ 45,900,000 | $ 53,000,000.0 |
Carrying amount of the investments, included in other assets | 176,200,000 | 181,200,000 | 189,400,000 |
Liability for estimated future capital contributions to the investments | 174,400,000 | 183,000,000.0 | 179,000,000.0 |
Amounts outstanding under standby letter of credit agreements | $ 61,200,000 | 65,600,000 | 75,300,000 |
Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Useful life of intangible assets | 15 years |  |  |
Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Useful life of intangible assets | 20 years |  |  |
Cost of Goods Sold |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Research and development costs included in technical expenditures | $ 103,100,000 | 51,900,000 | 58,500,000 |
SG&A |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Advertising cost | 355,200,000 | $ 357,800,000 | $ 374,100,000 |
Currency Swap |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Notional amount |  |  |  | $ 400,000,000.0
Foreign currency translation adjustments | 1,100,000 |  |  |
Fair Value | Fair Value, Measurements, Recurring |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Fair value of derivative | $ 1,500,000 |  |  |

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