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Other Financial Information | 12 Months Ended
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Sep. 30, 2021
Other Financial Information |
Other Financial Information | 16. Other Financial Information Accrued expenses and other current liabilities consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fiscal Year Ended
​ |  | September 30, |  | September 30,
​ | ​ | 2021 | ​ | 2020
​ | ​ | (in millions)
Accrued salaries and benefits | ​ | $ | 661.8 | ​ | $ | 675.7
Accrued contract costs | ​ |  | 1,202.1 | ​ |  | 1,137.5
Other accrued expenses | ​ |  | 310.3 | ​ |  | 436.5
​ | ​ | $ | 2,174.2 | ​ | $ | 2,249.7
​ Accrued contract costs above include balances related to professional liability accruals of $736.4 million and $596.0 million as of September 30, 2021 and 2020, respectively. The remaining accrued contract costs primarily relate to costs for services provided by subcontractors and other non-employees. Liabilities recorded related to accrued contract losses were not material as of September 30, 2021 and 2020. The Company did not have material revisions to estimates for contracts where revenue is recognized using the percentage-of-completion method during the twelve months ended September 30, 2021. In the first quarter of fiscal 2019, the Company commenced a restructuring plan to improve profitability. The Company incurred restructuring expenses of $48.8 million, including personnel and other costs of $37.8 million and real estate costs of $11.0 million during the year ended September 30, 2021, of which $5.2 million was accrued and unpaid at September 30, 2021. The Company incurred restructuring expenses of $188.3 million, including personnel and other costs of $149.2 million and real estate costs of $39.1 million during the year ended September 30, 2020, of which $56.2 million was accrued and unpaid at September 30, 2020. In connection with this restructuring plan, the Company evaluated its real estate portfolio to better align with the ongoing business. The Company identified certain long-lived assets that were no longer recoverable, and recorded an impairment of $27.4 million in Impairment of long-lived assets, including goodwill during the fourth quarter of fiscal 2019. Fair value of the long-lived assets was determined primarily using Level 3 inputs, such as discounted cash flows.

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