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Indebtedness - Senior Credit Facilities (Details) | Dec. 17, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 16, 2019 USD ($)
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Senior Credit Facilities | Senior credit facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Consolidated leverage ratio | 3.75 |  |
Consolidated leverage ratio after certain permitted acquisitions | 4.25 |  |
Consolidated interest coverage ratio | 3.00 |  |
Term loan | Term loans |  |  |
Line of Credit Facility [Line Items] |  |  |
Face amount of debt | $ 250,000,000.0 | $ 250,000,000.0 | $ 350,000,000.0
Revolving loans | Domestic revolving credit facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity under financing arrangement | 300,000,000.0 |  | 200,000,000.0
Revolving loans | Foreign credit instrument facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity under financing arrangement | 150,000,000.0 |  | 150,000,000.0
Revolving loans | Senior Credit Facilities | Senior credit facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity under financing arrangement | 800,000,000.0 |  |
Revolving loans | Participation Foreign Credit Instrument Facility | Letters of credit and guarantees |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity under financing arrangement | 55,000,000.0 |  | 110,000,000.0
Revolving loans | Bilateral foreign credit instrument facility | Letters of credit and guarantees |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity under financing arrangement | $ 45,000,000.0 |  | $ 40,000,000.0

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