The total number of Board members of the Investee.

No definition available.

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- Definition

The number of the Company's Board members currently serving on the Investee's Board.

+ References

No definition available.

+ Details

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- Definition

Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

+ References

No definition available.

+ Details

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- Definition

The number of warrants issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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- Definition

The number of tranches in which the Company agreed to purchase common stock and warrants upon satisfaction of certain closing conditions under the terms of the securities purchase agreement.

+ References

No definition available.

+ Details

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- Definition

The number of the investee's board members which the Company has the right to designate.

+ References

No definition available.

+ Details

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

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- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(d))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117546-209714

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Details

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- Details

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Financial Instruments and Fair Value Measurements - Equity Investment in Entasis (Details) - Entasis $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2021 USD ($) director $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) director $ / shares	Jun. 30, 2020 USD ($) $ / shares	Dec. 31, 2020 USD ($)
Equity Investment
Number of investee's board members which may be designated by the Company \| director				2
Number of Investee's Board members currently representing the Company \| director	0			0
Number of the Investee's Board members \| director	6			6
Number of tranches	2
Equity investment ownership percentage	60.60%			60.60%		51.00%
Unrealized gain from fair value changes in equity investments	$ 44.7		$ 33.3	$ 33.2	$ 33.3
Common stock and warrants
Equity Investment
Payments to acquire equity securities	20.0	$ 12.5	$ 35.0
Fair value of equity securities	$ 131.3			131.3		$ 78.0
Common stock
Equity Investment
Number of shares purchased under the securities purchase agreement \| shares	10,000,000	4,672,897	14,000,000
Fair value of equity securities	$ 76.6			76.6		46.1
Warrants
Equity Investment
Number of warrants purchased under the securities purchase agreement \| shares	10,000,000	4,672,897	14,000,000
Fair value of equity securities	$ 54.7			$ 54.7		$ 31.9
Warrants acquired in second quarter of 2020
Equity Investment
Exercise price of warrants \| $ / shares			$ 2.50		$ 2.50
Term of warrants			5 years		5 years
Warrants acquired in third quarter of 2020
Equity Investment
Exercise price of warrants \| $ / shares		$ 2.675
Term of warrants		5 years
Warrants acquired in second quarter of 2021
Equity Investment
Exercise price of warrants \| $ / shares	$ 2.00			$ 2.00
Term of warrants	5 years			5 years