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v3.21.2

Goodwill and Intangible Assets - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 28, 2021 | Sep. 27, 2020 | Sep. 27, 2020 | Jun. 30, 2020 | Sep. 29, 2019 | Oct. 03, 2021 | Sep. 27, 2020 | Sep. 29, 2019
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill | $ 0 |  | $ 15,800,000 |  |  | $ 0 | $ 15,800,000 | $ 7,755,000
Percentage of excess of fair value over carrying value (less than) |  |  |  |  |  | 150.00% |  |
Carrying value |  | $ 2,378,558,000 | 2,378,558,000 |  |  | $ 2,576,562,000 | 2,378,558,000 |
Goodwill |  | 993,498,000 | 993,498,000 |  | $ 924,820,000 | 1,108,578,000 | 993,498,000 | 924,820,000
Amortization expense for intangible assets |  |  |  |  |  | 11,500,000 | 11,600,000 | 11,600,000
Australia |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Percentage negative growth |  |  |  | 7.00% |  |  |  |
GSG |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill |  |  |  |  |  |  | 0 |
Goodwill |  | 516,315,000 | 516,315,000 |  | 441,802,000 | 538,433,000 | 516,315,000 | 441,802,000
Gross amounts of goodwill |  | 534,000,000 | 534,000,000 |  |  | 556,100,000 | 534,000,000 |
Accumulated impairment |  | 17,700,000 | 17,700,000 |  |  | 17,700,000 | 17,700,000 |
CIG |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill |  |  |  |  |  |  | 15,800,000 |
Goodwill |  | 477,183,000 | 477,183,000 |  | 483,018,000 | 570,145,000 | 477,183,000 | 483,018,000
Gross amounts of goodwill |  | 598,700,000 | 598,700,000 |  |  | 691,600,000 | 598,700,000 |
Accumulated impairment |  |  |  |  |  | $ 121,500,000 |  |
ASP |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill |  | 15,800,000 |  |  |  |  |  |
Carrying value |  | 144,900,000 | 144,900,000 |  |  |  | 144,900,000 |
Goodwill |  | $ 95,500,000 | $ 95,500,000 |  |  |  | $ 95,500,000 |
RFS |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill |  |  |  |  | 7,800,000 |  |  |
Carrying value |  |  |  |  | 61,000,000 |  |  | 61,000,000
Goodwill |  |  |  |  | $ 48,800,000 |  |  | $ 48,800,000

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