Research and Development Tax Incentive (Details) - Australian Taxation Office $ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2021 AUD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 AUD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 AUD ($)	Jun. 30, 2022 AUD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 AUD ($)
Reduction to research and development expenses	$ 1.0	$ 1.3	$ 0.0	$ 0.0	$ 1.7	$ 2.3
Research And Development Cash Tax Incentive Receivable			$ 2.6				$ 3.8	$ 2.8	$ 3.8