Business Segment Information - Schedule of Property, Net and Operating Lease Right-of-Use Assets by Geographic Region (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|---|---|---|---|
| Sales and property by geographic region | |||
| Property, net and operating lease right-of-use assets | $ 1,221 | $ 1,200 | $ 1,200 |
| North America | |||
| Sales and property by geographic region | |||
| Property, net and operating lease right-of-use assets | 700 | 659 | 692 |
| Europe, Middle East, and Africa | |||
| Sales and property by geographic region | |||
| Property, net and operating lease right-of-use assets | 239 | 261 | 246 |
| Asia Pacific | |||
| Sales and property by geographic region | |||
| Property, net and operating lease right-of-use assets | 189 | 187 | 162 |
| Latin America | |||
| Sales and property by geographic region | |||
| Property, net and operating lease right-of-use assets | $ 93 | $ 93 | $ 100 |