Earnings Per Share and Certain Related Information - Narrative (Details) - USD ($) |
3 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jul. 30, 2026 |
Jun. 26, 2026 |
Mar. 27, 2026 |
Dec. 26, 2025 |
Sep. 26, 2025 |
Jun. 27, 2025 |
Mar. 28, 2025 |
Dec. 27, 2024 |
Jan. 02, 2026 |
Jan. 30, 2025 |
Jan. 25, 2023 |
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| Class of Stock [Line Items] | |||||||||||
| Common stock, issued (in shares) | 117,132,889 | 119,081,294 | |||||||||
| Dividend declared (in dollars per share) | $ 0.36 | $ 0.36 | $ 0.32 | $ 0.32 | $ 0.32 | $ 0.32 | $ 0.29 | ||||
| Subsequent Event | |||||||||||
| Class of Stock [Line Items] | |||||||||||
| Dividend declared (in dollars per share) | $ 0.36 | ||||||||||
| 2023 Stock Repurchase Program | |||||||||||
| Class of Stock [Line Items] | |||||||||||
| Amount authorized to be repurchased | $ 1,000,000,000.0 | ||||||||||
| 2025 Stock Repurchase Program | |||||||||||
| Class of Stock [Line Items] | |||||||||||
| Amount authorized to be repurchased | $ 1,500,000,000 | $ 1,500,000,000 | |||||||||
| Remaining authorized repurchase amount | $ 618,800,000 | ||||||||||
| PA Consulting Group Limited | |||||||||||
| Class of Stock [Line Items] | |||||||||||
| Common stock, issued (in shares) | 2,043,537 | 2,043,537 | |||||||||
| X | ||||||||||
- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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