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