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v3.22.0.1

Joint Ventures and VIE's and Other Investments (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Jan. 01, 2021 | Oct. 01, 2021 | Mar. 02, 2021
Variable Interest Entity [Line Items] |  |  |  |
Consolidated assets | $ 14,804,094 |  | $ 14,632,609 |
Amount by which equity method investments exceeded share of venture net assets | 36,600 |  |  |
Income from equity method investments | (12,749) | $ (1,159) |  |
Impairment of long-lived assets and equity method investment | 72,266 | 27,902 |  |
PA Consulting Employees |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Ownership interest of employees |  |  |  | 35.00%
PA Consulting Group Limited |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Percentage of outstanding shares of common and preferred stock acquired |  |  |  | 65.00%
AWE Management Ltd |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Percentage of ownership interest in joint venture |  |  | 24.50% |
Impairment of long-lived assets and equity method investment |  | 27,900 |  |
C3 |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Gain on sale of stock |  | 82,600 |  |
Consolidated Joint Venture | Variable Interest Entity, Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Consolidated assets | 266,800 |  | $ 289,800 |
Consolidated liabilities | 208,700 |  | 220,800 |
Unconsolidated Joint Venture | VIE, not primary beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Consolidated assets | 114,200 |  | 115,100 |
Consolidated liabilities | 127,500 |  | 129,500 |
Equity method investments | 106,700 |  | 121,300 |
Income from equity method investments | 6,800 | $ 18,300 |  |
Accounts receivable from unconsolidated joint ventures accounted for under the equity method | $ 16,100 |  | $ 19,700 |

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