Note 8—Intangible Assets and Goodwill Finite-lived and indefinite-lived intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, | | 2025 | | 2024 | | | Gross | | Accumulated Amortization | | Net | | Gross | | Accumulated Amortization | | Net | | | (in millions) | | Finite-lived intangible assets: | | | | | | | | | | | | | Customer relationships | $ | 476 | | | $ | (245) | | | $ | 231 | | | $ | 535 | | | $ | (298) | | | $ | 237 | | | Trade names | — | | | — | | | — | | | 190 | | | (179) | | | 11 | | | | | | | | | | | | | | | | | | | | | | | | | | | Total finite-lived intangible assets | 476 | | | (245) | | | 231 | | | 725 | | | (477) | | | 248 | | | Indefinite-lived intangible assets: | | | | | | | | | | | | Customer relationships and reacquired rights | 23,331 | | | — | | | 23,331 | | | 22,557 | | | — | | | 22,557 | | | Visa trade name | 4,084 | | | — | | | 4,084 | | | 4,084 | | | — | | | 4,084 | | | Total indefinite-lived intangible assets | 27,415 | | | — | | | 27,415 | | | 26,641 | | | — | | | 26,641 | | | Total intangible assets | $ | 27,891 | | | $ | (245) | | | $ | 27,646 | | | $ | 27,366 | | | $ | (477) | | | $ | 26,889 | |
For fiscal 2025, 2024 and 2023, amortization expense related to finite-lived intangible assets was $78 million, $79 million and $76 million, respectively. As of September 30, 2025, estimated future amortization expense on finite-lived intangible assets was as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the Years Ending September 30, | | 2026 | | 2027 | | 2028 | | 2029 | | 2030 | | Thereafter | | Total | | (in millions) | | Estimated future amortization expense | $ | 63 | | | $ | 62 | | | $ | 43 | | | $ | 29 | | | $ | 10 | | | $ | 24 | | | $ | 231 | |
The changes in goodwill were as follows: | | | | | | | | | | | | | For the Years Ended September 30, | | 2025 | | 2024 | | (in millions) | Balance as of beginning of period | $ | 18,941 | | | $ | 17,997 | | | Goodwill from acquisitions | 794 | | | 790 | | | Foreign currency translation | 144 | | | 154 | | Balance as of end of period | $ | 19,879 | | | $ | 18,941 | |
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