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Stockholders' Equity (Narrative) (Detail) shares in Thousands, $ in Millions | 6 Months Ended | 44 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) shares | Jun. 30, 2024 USD ($) shares
Equity [Abstract] |  |
Remaining authorized amount under stock repurchase program | $ 169.6 | $ 169.6
Common stock repurchased, shares | shares | 811 | 4,300
Purchase of Company, value | $ 44.2 | $ 230.4
Maximum |  |
Equity [Abstract] |  |
Stock repurchase program, authorized amount | $ 400.0 | $ 400.0

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