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Marketable Securities - Schedule of Fair Value and Unrealized Losses of Debt Securities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | $ 3,300.9 | $ 6,516.3
Unrealized Loss - Less than 12 months | (76.9) | (42.3)
Fair Value - 12 Months or Greater | 4,332.2 | 0.0
Unrealized Loss - 12 Months or Greater | (225.9) | 0.0
Fair Value - Total | 7,633.1 | 6,516.3
Unrealized Loss - Total | (302.8) | (42.3)
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 2,445.4 | 5,889.3
Unrealized Loss - Less than 12 months | (73.1) | (40.9)
Fair Value - 12 Months or Greater | 4,200.4 | 0.0
Unrealized Loss - 12 Months or Greater | (218.0) | 0.0
Fair Value - Total | 6,645.8 | 5,889.3
Unrealized Loss - Total | (291.1) | (40.9)
U.S. government and government agency obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 785.2 | 90.0
Unrealized Loss - Less than 12 months | (2.0) | (0.8)
Fair Value - 12 Months or Greater | 71.0 | 0.0
Unrealized Loss - 12 Months or Greater | (4.9) | 0.0
Fair Value - Total | 856.2 | 90.0
Unrealized Loss - Total | (6.9) | (0.8)
Sovereign bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 18.6 | 37.0
Unrealized Loss - Less than 12 months | (1.1) | (0.3)
Fair Value - 12 Months or Greater | 45.6 | 0.0
Unrealized Loss - 12 Months or Greater | (1.9) | 0.0
Fair Value - Total | 64.2 | 37.0
Unrealized Loss - Total | (3.0) | (0.3)
Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months |  | 295.7
Unrealized Loss - Less than 12 months |  | (0.1)
Fair Value - 12 Months or Greater |  | 0.0
Unrealized Loss - 12 Months or Greater |  | 0.0
Fair Value - Total |  | 295.7
Unrealized Loss - Total |  | (0.1)
Certificates of deposit |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 40.2 | 169.4
Unrealized Loss - Less than 12 months | (0.1) | (0.1)
Fair Value - 12 Months or Greater | 0.0 | 0.0
Unrealized Loss - 12 Months or Greater | 0.0 | 0.0
Fair Value - Total | 40.2 | 169.4
Unrealized Loss - Total | (0.1) | (0.1)
Asset-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value - Less than 12 Months | 11.5 | 34.9
Unrealized Loss - Less than 12 months | (0.6) | (0.1)
Fair Value - 12 Months or Greater | 15.2 | 0.0
Unrealized Loss - 12 Months or Greater | (1.1) | 0.0
Fair Value - Total | 26.7 | 34.9
Unrealized Loss - Total | $ (1.7) | $ (0.1)

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