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v3.19.3.a.u2

Financial Instruments (Details 3) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Proceeds from Marketable Debt Securities |  |  |
Proceeds from maturities and sales | $ 6,007.0 | $ 9,173.7 | $ 5,565.9
Realized gains | 6.0 | 3.2 | 3.0
Realized losses | $ (1.5) | $ (11.7) | $ (22.4)

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