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Financial Instruments (Details 1) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable debt securities |  |
Amortized Cost | $ 3,279.6 | $ 2,435.9
Gross unrealized gains | 0.4 | 0.4
Gross unrealized losses | (25.8) | (3.2)
Fair value | 3,254.2 | 2,433.1
Marketable equity securities |  |
Amortized Cost | 1,137.2 | 1,167.0
Gross Unrealized Gains | 0.0 | 160.9
Gross Unrealized Losses | (351.6) | (279.4)
Fair Value | 785.6 | 1,048.5
Corporate debt securities Current |  |
Marketable debt securities |  |
Amortized Cost | 1,363.9 | 723.6
Gross unrealized gains | 0.0 | 0.1
Gross unrealized losses | (6.3) | (0.3)
Fair value | 1,357.6 | 723.4
Corporate debt securities Non-current |  |
Marketable debt securities |  |
Amortized Cost | 540.4 | 385.4
Gross unrealized gains | 0.1 | 0.2
Gross unrealized losses | (7.8) | (0.8)
Fair value | 532.7 | 384.8
Government securities Current |  |
Marketable debt securities |  |
Amortized Cost | 798.0 | 817.0
Gross unrealized gains | 0.1 | 0.0
Gross unrealized losses | (4.5) | (0.4)
Fair value | 793.6 | 816.6
Government securities Non-current |  |
Marketable debt securities |  |
Amortized Cost | 367.2 | 377.0
Gross unrealized gains | 0.2 | 0.1
Gross unrealized losses | (4.1) | (1.0)
Fair value | 363.3 | 376.1
Mortgage and other asset backed securities Current |  |
Marketable debt securities |  |
Amortized Cost | 0.1 | 1.1
Gross unrealized gains | 0.0 | 0.0
Gross unrealized losses | 0.0 | 0.0
Fair value | 0.1 | 1.1
Mortgage and other asset backed securities Non-current |  |
Marketable debt securities |  |
Amortized Cost | 210.0 | 131.8
Gross unrealized gains | 0.0 | 0.0
Gross unrealized losses | (3.1) | (0.7)
Fair value | 206.9 | 131.1
Equity Securities, Current |  |
Marketable equity securities |  |
Amortized Cost | 33.9 | 33.9
Gross Unrealized Gains | 0.0 | 9.9
Gross Unrealized Losses | 9.7 | 0.0
Fair Value | 24.2 | 43.8
Equity Securities, Non-Current |  |
Marketable equity securities |  |
Amortized Cost | 1,103.3 | 1,133.1
Gross Unrealized Gains | 0.0 | 151.0
Gross Unrealized Losses | (341.9) | (279.4)
Fair Value | $ 761.4 | $ 1,004.7

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