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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Convertible notes conversion discount, taxes | $ 6.2
Issuance cost, equity component | 6.0
Convertible Senior Notes Due 2024 |
Convertible debt, equity component, deferred tax | 3.0
Convertible Senior Notes Due 2026 |
Convertible debt, equity component, deferred tax | $ 0.9

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