Noncontrolling Interests (Details)	6 Months Ended
	Mar. 31, 2022 shares
Noncontrolling Interest [Line Items]
LLC Units (in shares)	287,444,560
LLC Units and Units Held by Pre-IPO LLC Members
Noncontrolling Interest [Line Items]
Ownership Percentage	100.00%
LLC Units held by Weber Inc.
Noncontrolling Interest [Line Items]
LLC Units (in shares)	52,834,735
Ownership Percentage	18.00%
Units held by Pre-IPO LLC Members
Noncontrolling Interest [Line Items]
LLC Units (in shares)	234,609,825
Ownership Percentage	82.00%