Debt and Credit Facilities - Capped Call Transactions (Details) - 2.375% convertible senior notes, capped calls - Convertible Debt $ / shares in Units, $ in Millions	May 21, 2020 USD ($) $ / shares
Debt Instrument [Line Items]
Convertible debt, stock price trigger (in USD per share)	$ 21.01
Conversion price (in USD per share)	$ 23.79
Convertible debt expense, capped calls | $	$ 20.7