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Treasury Stock - Additional Information (Detail) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Class of Stock [Line Items] |  |  |  |
Number of shares of common stock authorized to repurchase | 117,000,000 |  |  |
Treasury Stock, Value | $ 841,127,000 |  | $ 831,510,000 |
Treasury stock, shares | 114,563,796 |  | 114,476,691 |
Average price per share of common stock | $ 110.01 |  |  |
Common stock, shares outstanding | 51,325,363 |  | 51,359,544 |
Purchase of treasury stock, shares | 87,105 |  |  |
Purchase of treasury stock | $ (9,617,000) | $ (9,526,000) |  |
Treasury stock, value, acquired, cost method | $ 9,617,000 | $ 9,526,000 |  |
Treasury stock, shares outstanding | 114,563,796 |  |  |
Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Treasury stock, shares | 165,889,159 | 165,584,634 | 165,836,235 | 165,486,225
Purchase of treasury stock, shares | 0 | 0 |  |
Purchase of treasury stock | $ 0 | $ 0 |  |
Treasury stock, value, acquired, cost method | $ 0 | $ 0 |  |
Treasury Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Treasury stock, shares | (114,563,796) | (114,213,951) | (114,476,691) | (114,099,537)
Purchase of treasury stock, shares | 87,105 | 114,414 |  |
Purchase of treasury stock | $ (9,617,000) | $ (9,526,000) |  |
Treasury stock, value, acquired, cost method | 9,617,000 | $ 9,526,000 |  |
1996 Repurchase Program [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Treasury Stock, Value | $ 841,000,000 |  |  |
Treasury stock, shares | 114,563,796 |  |  |
Common stock equals to percentage of outstanding common stock | 69.00% |  |  |
Average price per share of common stock | $ 7.34 |  |  |
Purchase of treasury stock, shares | 52,855 |  |  |
Purchase of treasury stock | $ (5,000,000) |  |  |
Treasury stock, value, acquired, cost method | $ 5,000,000 |  |  |
1996 Repurchase Program [Member] | Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Average price per share of common stock | $ 94.58 |  |  |

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