Summary of Significant Accounting Policies (Policies)
|6 Months Ended|
Mar. 31, 2021
|Accounting Policies [Abstract]|
|Revenue||Net revenue includes gross revenue less sales discounts, customer rebates, sales incentives, and product returns, all of which require the Company to make estimates for the portion of these allowances that have yet to be credited or paid to customers. The Company estimates these allowances using the expected value method, which is based upon historical rates and projections of customer purchases toward contractual rebate thresholds.|
|Revenue Recognition, Deferred Revenue||
The balance in receivables from long-term manufacturing contracts at March 31, 2021 and September 30, 2020 was $149.2 and $138.1, respectively. The change was driven by the impact of net revenue recognized prior to billings. The balance in the liabilities from long-term manufacturing contracts and advances at March 31, 2021 and September 30, 2020 was $265.6 and $189.1, respectively, and consists primarily of cash payments received or due in advance of satisfying performance obligations. The revenue recognized for the six months ended March 31, 2021 and 2020 related to liabilities from long-term manufacturing contracts and advances as of September 30, 2020 and 2019 was $97.6 and $87.8, respectively. During the three and six months ended March 31, 2021 and 2020, the adjustments related to performance obligations satisfied in previous periods were immaterial.
Disclosure of accounting policy for revenue recognition for long-duration contracts, including the timing of revenue recognition and the basis for determining the amount of revenue recognized, excluding fees earned on separate accounts.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.
Reference 1: http://www.xbrl.org/2003/role/exampleRef