Derivative Financial Instruments - Narrative (Details) - Jun. 30, 2019 $ in Millions, $ in Millions	USD ($)	NZD ($)	AUD ($)
Interest Rate Swap
Derivative [Line Items]
Notional amount	$ 100,000,000
Foreign Exchange Forward | Intercompany Loan | Australian Intercompany Loan
Derivative [Line Items]
Receivable hedged			$ 153.5
Foreign Exchange Forward | Intercompany Loan | New Zealand Intercompany Loan
Derivative [Line Items]
Receivable hedged		$ 37.5