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Business Combinations and Discontinued Operations - Summary of Discontinued Operations (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($)
Discontinued Operations And Disposal Groups [Abstract] |
Total revenues | $ 79.2
Earnings from operations | 6.6
Loss on sale | (6.0)
Pretax earnings | 0.6
Income tax expense | 0.1
Net earnings | $ 0.5

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