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Pension and Other Postretirement Benefit Plans (Tables) | 12 Months Ended
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Sep. 30, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Change In Plans' Combined Net Benefit Obligations | The following table sets forth the changes in the plans’ combined net benefit obligation (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Net benefit obligation at the beginning of the year | $ | 404,820 |  |  | $ | 437,920 |  |  | $ | 2,375,640 |  |  | $ | 2,388,077 |
Service cost | 236 |  |  | 456 |  |  | 6,480 |  |  | 6,568 |
Interest cost | 10,350 |  |  | 10,221 |  |  | 42,328 |  |  | 38,907 |
Participants’ contributions | — |  |  | — |  |  | 249 |  |  | 212 |
Actuarial gains (1) | (85,067) |  |  | (11,808) |  |  | (651,798) |  |  | (140,670) |
Benefits paid | (25,565) |  |  | (25,582) |  |  | (74,378) |  |  | (74,477) |
Curtailments/settlements/plan amendments | (5,271) |  |  | (6,387) |  |  | (2,641) |  |  | (13,932) |
Acquisition of PA Consulting Plans, net of post-deal transfers (2) | — |  |  | — |  |  | — |  |  | 66,065 |
Effect of exchange rate changes and other, net | — |  |  | — |  |  | (330,414) |  |  | 104,890 |
Net benefit obligation at the end of the year | $ | 299,503 |  |  | $ | 404,820 |  |  | $ | 1,365,466 |  |  | $ | 2,375,640 |
(1)Actuarial gains primarily driven by change in discount rates. (2)See note below change in assets table.
Schedule of Change in Combined Fair Value of the Plans' Assets | The following table sets forth the changes in the combined Fair Value of the plans’ assets (segregated between plans existing within and outside the U.S.) for the years ended September 30, 2022 and October 1, 2021 (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Fair value of plan assets at the beginning of the year | $ | 385,521 |  |  | $ | 382,250 |  |  | $ | 2,203,495 |  |  | $ | 2,043,356 |
Actual (loss) return on plan assets | (68,585) |  |  | 35,152 |  |  | (557,972) |  |  | 60,040 |
Employer contributions | 93 |  |  | 88 |  |  | 33,032 |  |  | 39,085 |
Participants’ contributions | — |  |  | — |  |  | 249 |  |  | 212 |
Gross benefits paid | (25,565) |  |  | (25,582) |  |  | (74,378) |  |  | (74,477) |
Curtailments/settlements/plan amendments | (5,271) |  |  | (6,387) |  |  | (2,641) |  |  | (13,932) |
Acquisition of PA Consulting Plans, net of post-deal transfers | — |  |  | — |  |  | — |  |  | 60,160 |
Effect of exchange rate changes and other, net | — |  |  | — |  |  | (304,160) |  |  | 89,051 |
Fair value of plan assets at the end of the year | $ | 286,193 |  |  | $ | 385,521 |  |  | $ | 1,297,625 |  |  | $ | 2,203,495 |
Reconciliation of Combined Funded Status of Plans and Recognized in Consolidated Balance Sheet | The following table reconciles the combined funded statuses of the plans recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Net benefit obligation at the end of the year | $ | 299,503 |  |  | $ | 404,820 |  |  | $ | 1,365,466 |  |  | $ | 2,375,640 |
Fair value of plan assets at the end of the year | 286,193 |  |  | 385,521 |  |  | 1,297,625 |  |  | 2,203,495 |
Underfunded amount recognized at the end of the year | $ | 13,310 |  |  | $ | 19,299 |  |  | $ | 67,841 |  |  | $ | 172,145 |
Schedule of Accumulated and Projected Benefit Obligations | The following table presents the accumulated benefit obligation at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Accumulated benefit obligation at the end of the year | $ | 299,347 |  |  | $ | 404,283 |  |  | $ | 1,355,717 |  |  | $ | 2,305,808 |
Schedule of Amount Recognized in Accompanying Balance Sheets | The following table presents the amounts recognized in the accompanying Consolidated Balance Sheets at September 30, 2022 and October 1, 2021 (segregated between plans existing within and outside the U.S.) (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Prepaid benefit cost included in noncurrent assets | $ | — |  |  | $ | — |  |  | $ | 54,897 |  |  | $ | 48,340 |
Accrued benefit cost included in current liabilities | 83 |  |  | 84 |  |  | 4,359 |  |  | 3,873 |
Accrued benefit cost included in noncurrent liabilities | 13,227 |  |  | 19,215 |  |  | 118,379 |  |  | 216,612 |
Net amount recognized at the end of the year | $ | 13,310 |  |  | $ | 19,299 |  |  | $ | 67,841 |  |  | $ | 172,145 |
Schedule of Pension Plans Recorded In Accumulated Other Comprehensive Loss Not Yet Recognized As Component of Net Periodic Pension Cost | The following table presents certain amounts relating to our plans recorded in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost at September 30, 2022 and October 1, 2021 (segregated between U.S. and non-U.S. plans) (in thousands):
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Net actuarial loss | $ | 37,638 |  |  | $ | 39,217 |  |  | $ | 248,716 |  |  | $ | 328,397 |
Prior service cost | 697 |  |  | 1,021 |  |  | 20,344 |  |  | 25,926 |
Total | $ | 38,335 |  |  | $ | 40,238 |  |  | $ | 269,060 |  |  | $ | 354,323 |
Schedule of Accumulated Comprehensive Income Amortized Against Earnings In Next Year | The following table presents the amount of accumulated comprehensive income that will be amortized against earnings as part of our net periodic benefit cost in fiscal 2023 based on 2022 exchange rates (segregated between U.S. and non-U.S. plans) (in thousands):
| U.S. Plans |  | Non-U.S. Plans
Unrecognized net actuarial (gain) or loss | $ | (1,770) |  |  | $ | 5,310 |
Unrecognized prior service cost | 431 |  |  | 1,246 |
Accumulated comprehensive (gain) or loss to be recorded against earnings | $ | (1,339) |  |  | $ | 6,556 |
Schedule of Weighted Average Measurement Of Assets And Liabilities | The plans’ weighted average asset allocations at September 30, 2022 and October 1, 2021 (the measurement dates used in valuing the plans’ assets and liabilities) were as follows:
| U.S. Plans |  | Non-U.S. Plans
| September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Equity securities | 2 | % |  | 3 | % |  | 15 | % |  | 15 | %
Debt securities | 66 | % |  | 58 | % |  | 49 | % |  | 54 | %
Real estate investments | — | % |  | — | % |  | 11 | % |  | 9 | %
Other | 32 | % |  | 39 | % |  | 25 | % |  | 22 | %
Anticipated Cash Contributions | The following table presents the amount of cash contributions we anticipate making into the plans during fiscal 2023 (in thousands):
| U.S. Plans |  | Non-U.S. Plans
Anticipated cash contributions | $ | — |  |  | $ | 26,651 |
Schedule of Expected Payments to Participants in Pension Plan | The following table presents the total benefit payments expected to be paid to plan participants during each of the next five fiscal years, and in total for the five years thereafter (in thousands):
| U.S. Plans |  | Non-U.S. Pans
2023 | $ | 30,869 |  |  | $ | 62,922 |
2024 | 28,884 |  |  | 67,058 |
2025 | 28,088 |  |  | 68,129 |
2026 | 27,377 |  |  | 72,069 |
2027 | 26,139 |  |  | 78,254 |
For the periods 2028 through 2032 | 115,872 |  |  | 351,748 |
Schedule of Contribution to Multiemployer Pension Plans | The following table presents the Company’s contributions to these multiemployer plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands):
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Europe | $ | 1,548 |  |  | $ | 1,713 |  |  | $ | 1,922 |
United States | 11,038 |  |  | 11,316 |  |  | 6,637 |
Contributions to multiemployer pension plans | $ | 12,586 |  |  | $ | 13,029 |  |  | $ | 8,559 |
U.S. Plans |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Significant Actuarial Assumptions In Determining Funded Status Plans | The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020:
| For the Years Ended
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Discount rates | 4.2% to 5.5% |  | 2.3% to 2.8% |  | 2.0% to 2.7%
Rates of compensation increases | 3.5% |  | 3.5% |  | 3.5%
Expected long-term rates of return on assets | 5.5% to 6.4% |  | 4.7% to 5.1% |  | 4.6% to 4.7%
Schedule of Pension Plans Recognized In Accumulated Other Comprehensive Loss | The following table presents certain amounts relating to our U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands):
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Arising during the period: |  |  |  |  |
Net actuarial loss (gain) | $ | 578 |  |  | $ | (25,109) |  |  | $ | (900) |
Prior service cost | — |  |  | — |  |  | 1,589
Total | 578 |  |  | (25,109) |  |  | 689
Reclassification adjustments: |  |  |  |  |
Net actuarial losses | (2,157) |  |  | (3,204) |  |  | (2,653) |
Prior service (benefit) | (324) |  |  | (325) |  |  | (244) |
Total | (2,481) |  |  | (3,529) |  |  | (2,897) |
Total | $ | (1,903) |  |  | $ | (28,638) |  |  | $ | (2,208) |
Schedule of Fair Value of Pension Plan Assets | The following table presents the Fair Value of the Company’s Domestic U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands):
| September 30, 2022
| Fair Value, Determined Using Fair Value Measurement Inputs
| Level 1 |  | Level 2 |  | Level 3 |  | Investments measured at Net Asset Value |  | Total
Equities | $ | 6,708 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6,708 |
Domestic bonds | 64,396 |  |  | 106,961 |  |  | — |  |  | — |  |  | 171,357 |
Overseas bonds | — |  |  | 15,200 |  |  | — |  |  | — |  |  | 15,200 |
Cash and equivalents | 19,025 |  |  | — |  |  | — |  |  | — |  |  | 19,025 |
Mutual funds | 73,903 |  |  | — |  |  | — |  |  | — |  |  | 73,903 |
Total | $ | 164,032 |  |  | $ | 122,161 |  |  | $ | — |  |  | $ | — |  |  | $ | 286,193 |
The following table presents the Fair Value of the Company’s U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands):
| October 1, 2021
| Fair Value, Determined Using Fair Value Measurement Inputs
| Level 1 |  | Level 2 |  | Level 3 |  | Investments measured at Net Asset Value |  | Total
Equities | $ | 12,331 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 12,331 |
Domestic bonds | 74,456 |  |  | 132,138 |  |  | — |  |  | — |  |  | 206,594 |
Overseas bonds | — |  |  | 15,730 |  |  | — |  |  | — |  |  | 15,730 |
Cash and equivalents | 22,634 |  |  | — |  |  | — |  |  | — |  |  | 22,634 |
Mutual funds | 128,232 |  |  | — |  |  | — |  |  | — |  |  | 128,232 |
Total | $ | 237,653 |  |  | $ | 147,868 |  |  | $ | — |  |  | $ | — |  |  | $ | 385,521 |
Schedule of Components of Net Periodic Pension Cost Recognized | The following table presents the components of net periodic benefit cost for the Company’s U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands):
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Service cost | $ | 236 |  |  | $ | 456 |  |  | $ | 409 |
Interest cost | 10,350 |  |  | 10,221 |  |  | 12,673 |
Expected return on plan assets | (16,933) |  |  | (15,932) |  |  | (17,670) |
Actuarial loss | 2,861 |  |  | 4,249 |  |  | 3,518 |
Prior service cost | 430 |  |  | 431 |  |  | 323 |
Net pension cost, before special items | $ | (3,056) |  |  | $ | (575) |  |  | $ | (747) |
Curtailment expense/Settlement (gain) loss | (206) |  |  | (64) |  |  | 3,436 |
Total net periodic pension (income) cost recognized | $ | (3,262) |  |  | $ | (639) |  |  | $ | 2,689 |
Non-U.S. Plans |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Significant Actuarial Assumptions In Determining Funded Status Plans | The following table presents the significant actuarial assumptions used in determining the funded statuses and the following year's benefit cost of the Company’s non-U.S. plans for the years ended September 30, 2022, October 1, 2021 and October 2, 2020:
| For the Years Ended
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Discount rates | 2.4% to 7.4% |  | 0.6% to 6.6% |  | 0.4% to 6.6%
Rates of compensation increases | 2.5% to 9.0% |  | 2.4% to 7.5% |  | 2.7% to 7.5%
Expected long-term rates of return on assets | 3.3% to 7.5% |  | 2.0% to 7.0% |  | 1.8% to 7.0%
Schedule of Pension Plans Recognized In Accumulated Other Comprehensive Loss | The following table presents certain amounts relating to our non-U.S. plans recognized in accumulated other comprehensive (gain) loss at September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands):
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Arising during the period: |  |  |  |  |
Net actuarial (gain) loss | $ | (78,705) |  |  | $ | (65,547) |  |  | $ | 71,676 |
Prior service cost | — |  |  | — |  |  | — |
Total | (78,705) |  |  | (65,547) |  |  | 71,676 |
Reclassification adjustments: |  |  |  |  |
Net actuarial losses | (5,492) |  |  | (8,761) |  |  | (6,322) |
Prior service (benefit) | (1,066) |  |  | (1,219) |  |  | (1,169) |
Total | (6,558) |  |  | (9,980) |  |  | (7,491) |
Total | $ | (85,263) |  |  | $ | (75,527) |  |  | $ | 64,185 |
Schedule of Fair Value of Pension Plan Assets | The following table presents the Fair Value of the Company’s non-U.S. plan assets at September 30, 2022, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands):
| September 30, 2022
| Fair Value, Determined Using Fair Value Measurement Inputs
| Level 1 |  | Level 2 |  | Level 3 |  | Investments measured at Net Asset Value |  | Total
Domestic equities | $ | — |  |  | $ | 42,655 |  |  | $ | — |  |  | $ | 1,539 |  |  | $ | 44,194 |
Overseas equities | — |  |  | 74,056 |  |  | — |  |  | 76,813 |  |  | 150,869 |
Domestic bonds | — |  |  | 38,448 |  |  | — |  |  | — |  |  | 38,448 |
Overseas bonds | — |  |  | 532,697 |  |  | — |  |  | 64,897 |  |  | 597,594 |
Cash and equivalents | 9,667 |  |  | 1,835 |  |  | — |  |  | — |  |  | 11,502 |
Real estate | — |  |  | 4,076 |  |  | 102,868 |  |  | 36,959 |  |  | 143,903 |
Insurance contracts | — |  |  | — |  |  | 80,231 |  |  |  |  | 80,231 |
Hedge funds | — |  |  | — |  |  | 138,603 |  |  | 11,568 |  |  | 150,171 |
Mutual funds | — |  |  | 80,713 |  |  | — |  |  | — |  |  | 80,713 |
Total | $ | 9,667 |  |  | $ | 774,480 |  |  | $ | 321,702 |  |  | $ | 191,776 |  |  | $ | 1,297,625 |
The following table presents the Fair Value of the Company’s non-U.S. plan assets at October 1, 2021, segregated by level of Fair Value measurement inputs within the Fair Value hierarchy promulgated by U.S. GAAP (in thousands):
| October 1, 2021
| Fair Value, Determined Using Fair Value Measurement Inputs
| Level 1 |  | Level 2 |  | Level 3 |  | Investments measured at Net Asset Value |  | Total
Domestic equities | $ | — |  |  | $ | 86,117 |  |  | $ | — |  |  | $ | 2,662 |  |  | $ | 88,779 |
Overseas equities | — |  |  | 142,243 |  |  | — |  |  | 101,071 |  |  | 243,314 |
Domestic bonds | — |  |  | 48,119 |  |  | — |  |  | — |  |  | 48,119 |
Overseas bonds | — |  |  | 1,049,585 |  |  | — |  |  | 56,616 |  |  | 1,106,201 |
Cash and equivalents | 27,579 |  |  | 1,322 |  |  | — |  |  | — |  |  | 28,901 |
Real estate | — |  |  | 17,319 |  |  | 116,936 |  |  | 53,434 |  |  | 187,689 |
Insurance contracts | — |  |  | — |  |  | 133,802 |  |  | — |  |  | 133,802 |
Hedge funds | — |  |  | — |  |  | 231,319 |  |  | 16,020 |  |  | 247,339 |
Mutual funds | — |  |  | 119,351 |  |  | — |  |  | — |  |  | 119,351 |
Total | $ | 27,579 |  |  | $ | 1,464,056 |  |  | $ | 482,057 |  |  | $ | 229,803 |  |  | $ | 2,203,495 |
Summary of Changes in the Fair Value of Plans Level 3 Assets | The following table summarizes the changes in the Fair Value of the Company’s non-U.S. Pension Plans’ Level 3 assets for the years ended September 30, 2022 and October 1, 2021 (in thousands):
| Real Estate |  | Insurance Contracts |  | Hedge Funds
Balance at Balance at October 2, 2020 | $ | 105,422 |  |  | $ | 67,709 |  |  | $ | 171,730 |
Purchases, sales, and settlements | 6,288 |  |  | 2,413 |  |  | 51,513 |
Realized and unrealized gains | 398 |  |  | 1,448 |  |  | 864 |
Acquisition of PA Consulting Plans, net of post-deal transfers | — |  |  | 60,160 |  |  | — |
Effect of exchange rate changes | 4,828 |  |  | 2,072 |  |  | 7,212 |
Balance at October 1, 2021 | $ | 116,936 |  |  | $ | 133,802 |  |  | $ | 231,319 |
Purchases, sales, and settlements | (8,686) |  |  | (6,312) |  |  | (11,553) |
Realized and unrealized losses | 14,701 |  |  | (24,770) |  |  | (42,964) |
Effect of exchange rate changes | (20,083) |  |  | (22,489) |  |  | (38,199) |
Balance at September 30, 2022 | $ | 102,868 |  |  | $ | 80,231 |  |  | $ | 138,603 |
Schedule of Components of Net Periodic Pension Cost Recognized | The following table presents the components of net periodic benefit cost for the Company’s Non-U.S. plans recognized in the accompanying Consolidated Statements of Earnings for the years ended September 30, 2022, October 1, 2021 and October 2, 2020 (in thousands):
| September 30, 2022 |  | October 1, 2021 |  | October 2, 2020
Service cost | $ | 6,480 |  |  | $ | 6,568 |  |  | $ | 5,710 |
Interest cost | 42,328 |  |  | 38,907 |  |  | 39,469 |
Expected return on plan assets | (71,875) |  |  | (90,346) |  |  | (93,407) |
Actuarial loss | 7,147 |  |  | 10,834 |  |  | 7,578 |
Prior service cost | 1,421 |  |  | 1,519 |  |  | 1,405 |
Net pension cost, before special items | $ | (14,499) |  |  | $ | (32,518) |  |  | $ | (39,245) |
Curtailment expense/Settlement loss | 329 |  |  | 2,847 |  |  | 1,341 |
Total net periodic pension (income) cost recognized | $ | (14,170) |  |  | $ | (29,671) |  |  | $ | (37,904) |
The service cost component of net periodic pension income is presented in direct cost of contracts and selling, general and administrative expenses while all other components are presented in miscellaneous income (expense), net on the Consolidated Statements of Earnings for the years presented above.

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