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PA Consulting Business Combination - Change in Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands | 3 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 02, 2021 | Oct. 01, 2021 | Oct. 01, 2021 | Oct. 02, 2020 | Sep. 27, 2019 | Mar. 02, 2021
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Noncontrolling interests - distributions and other |  |  | $ (44,372) | $ (41,032) | $ (15,555) |
Noncontrolling interest, Ending balance |  | $ 34,796 | 34,796 | 39,955 |  |
Preferred redeemable noncontrolling interests redemption value adjustment | $ 57,300 |  | 57,307 | $ 0 | $ 0 |
PA Consulting Employees |  |  |  |  |  |
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Fair value of redeemable noncontrolling interests at acquisition |  |  |  |  |  | $ 581,119
Cumulative Accrued Preferred Dividend to Preference Shareholders |  | 40,204 |  |  |  |
Noncontrolling interests - distributions and other |  | (40,204) |  |  |  |
Net loss attributable to redeemable noncontrolling interest to Common Shareholders |  | (85,414) |  |  |  |
Redeemable Noncontrolling interests redemption value adjustment |  | 175,183 |  |  |  |
Cumulative translation adjustment and other |  | (13,166) |  |  |  |
Noncontrolling interest, Ending balance |  | $ 657,722 | $ 657,722 |  |  |
PA Consulting Employees | B Ordinary Shares |  |  |  |  |  |
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Preferred redeemable noncontrolling interests redemption value adjustment | $ 117,900 |  |  |  |  |

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