Goodwill and Intangible Assets - Changes in Carrying Value of Goodwill (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|
Jun. 28, 2021 |
Sep. 27, 2020 |
Oct. 03, 2021 |
Sep. 27, 2020 |
Sep. 29, 2019 |
|
Goodwill [Roll Forward] | |||||
Balance at beginning of the period | $ 993,498,000 | $ 924,820,000 | |||
Acquisitions | 90,591,000 | 80,176,000 | |||
Impairment | $ 0 | $ (15,800,000) | 0 | (15,800,000) | $ (7,755,000) |
Translation and other | 24,489,000 | 4,302,000 | |||
Balance at end of the period | 993,498,000 | 1,108,578,000 | 993,498,000 | 924,820,000 | |
GSG | |||||
Goodwill [Roll Forward] | |||||
Balance at beginning of the period | 516,315,000 | 441,802,000 | |||
Acquisitions | 15,112,000 | 74,882,000 | |||
Impairment | 0 | ||||
Translation and other | 7,006,000 | (369,000) | |||
Balance at end of the period | 516,315,000 | 538,433,000 | 516,315,000 | 441,802,000 | |
CIG | |||||
Goodwill [Roll Forward] | |||||
Balance at beginning of the period | 477,183,000 | 483,018,000 | |||
Acquisitions | 75,479,000 | 5,294,000 | |||
Impairment | (15,800,000) | ||||
Translation and other | 17,483,000 | 4,671,000 | |||
Balance at end of the period | $ 477,183,000 | $ 570,145,000 | $ 477,183,000 | $ 483,018,000 |