Revenue Recognition - Additional Information (Detail 1)	Sep. 30, 2021	Sep. 30, 2020
Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period		1 month
Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period	1 month
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period		13 months
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
Revenue Recognition [Line Items]
Performance obligations, customer satisfaction period	21 months