v3.20.2

Fair value of financial instruments - credit valuation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Asset acquisitions |  |  |  |  |
Gain in change in fair value of derivative instruments | $ 3.1 | $ (7.0) | $ (2.5) | $ (9.4) |
Recurring | Credit valuation adjustments |  |  |  |  |
Asset acquisitions |  |  |  |  |
Net increase in fair value |  |  | 0.8 |  | $ 1.1
Pre-tax gain in other comprehensive income |  |  | 0.1 |  | 0.1
Gain in change in fair value of derivative instruments |  |  | $ 0.7 |  | $ 1.0

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