Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Debt - Settlement of debt (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
Debt - Settlement of debt (Details) - USD ($) $ in Millions	May 31, 2022	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Cash Paid		$ 0.0	$ 1,000.0
Net Loss on Inducements and Settlements		$ 6.2	$ 0.3
2017 Senior Convertible Debt \| Senior Convertible Debt \| Long-term Debt
Debt Instrument [Line Items]
Principal Amount Settled	$ 31.0
Cash Paid	65.3
Net Loss on Inducements and Settlements	5.9
2017 Junior Convertible Debt \| Junior Convertible Debt \| Long-term Debt
Debt Instrument [Line Items]
Principal Amount Settled	3.6
Cash Paid	8.2
Net Loss on Inducements and Settlements	$ 0.3