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Segment Information - Schedule of Segment Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Segment Reporting Information [Line Items]        
Revenue $ 1,399 $ 1,376 $ 2,887 $ 2,990
Operating income (loss) 124 166 389 405
Amortization of intangible assets 61 69 124 129
Depreciation of property, plant and equipment 22 20 43 41
OIBDA 207 255 556 575
Operating Segments | Recorded Music        
Segment Reporting Information [Line Items]        
Revenue 1,143 1,147 2,382 2,533
Operating income (loss) 151 189 434 465
Amortization of intangible assets 39 47 80 87
Depreciation of property, plant and equipment 13 14 26 28
OIBDA 203 250 540 580
Operating Segments | Music Publishing        
Segment Reporting Information [Line Items]        
Revenue 257 230 507 459
Operating income (loss) 52 38 101 70
Amortization of intangible assets 22 22 44 42
Depreciation of property, plant and equipment 1 1 2 3
OIBDA 75 61 147 115
Corporate expenses and eliminations        
Segment Reporting Information [Line Items]        
Revenue (1) (1) (2) (2)
Operating income (loss) (79) (61) (146) (130)
Amortization of intangible assets 0 0 0 0
Depreciation of property, plant and equipment 8 5 15 10
OIBDA $ (71) $ (56) $ (131) $ (120)