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Summary of Significant Accounting Policies and Procedures and Newly Adopted Accounting Standards - Derivative and Hedging Activities (Details) £ in Millions | Dec. 31, 2019 USD ($) derivative | May 31, 2019 GBP (£) derivative | May 31, 2019 USD ($) derivative | Oct. 31, 2018 derivative
--- | --- | --- | --- | ---
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Number of interest rate swaps | 3 |  |  | 3
Number of interest rate swaps for each term loan | 1 |  |  |
Term Loans |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Face amount of loan | $ | $ 250,000,000.0 |  |  |
Cross-currency swaps | Cash flow hedge |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Number of derivative instruments |  | 4 | 4 |
Swap exchange notional amount |  | £ 130 | $ 166,000,000 |

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