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Income Taxes - Narrative (Details) $ / shares in Units, kr in Millions, $ in Millions, ₩ in Billions			3 Months Ended			6 Months Ended		12 Months Ended
	Apr. 30, 2020 USD ($)	Apr. 30, 2020 DKK (kr)	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2019 USD ($) $ / shares	Jun. 30, 2019 DKK (kr)	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2019 USD ($) $ / shares	Dec. 31, 2017 USD ($)	Dec. 31, 2017 KRW (₩)
Income Taxes [Line Items]
Income tax provision			$ 7.7	$ 20.0		$ 23.7	$ 34.0
Effective income tax rate			(258.00%)	35.00%	35.00%	43.00%	31.00%
Adjustment for discrete tax expense (benefit), prior year foreign tax return			$ 3.4	$ 0.8		$ 4.4	$ (2.0)
Decrease in foreign income tax			$ 0.8	$ 0.6		$ 2.7	$ 1.5
Basic earnings per common share (in dollars per share) | $ / shares			$ 0.01	$ 0.01		$ 0.04	$ 0.02
Diluted earnings per common share (in dollars per share) | $ / shares			$ 0.01	$ 0.01		$ 0.04	$ 0.02
Tax Authority, South Korea (SRTO)
Income Taxes [Line Items]
Income tax assessment notice, amount								$ 9.4	₩ 11.3
2013 Tax Year | Danish Tax Authority | Foreign Tax Authority
Income Taxes [Line Items]
Proposed income adjustment				$ 1.7	kr 11.2
2014 Tax Year | Danish Tax Authority | Foreign Tax Authority
Income Taxes [Line Items]
Proposed income adjustment	$ 1.3	kr 8.6
Pro forma
Income Taxes [Line Items]
Effective income tax rate			(144.00%)	33.00%	33.00%	35.00%	33.00%

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