| Intangible Assets |
Intangible Assets Identifiable intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | (In millions) | Gross
Carrying
Amount | | Accumulated
Amortization | | Net Book
Value | | June 30, 2024 | | | | | | | Customer relationships | $ | 14,550 | | | $ | 8,116 | | | $ | 6,434 | | | Acquired software and technology | 2,110 | | | 1,228 | | | 882 | | | Trade names | 638 | | | 384 | | | 254 | | | Purchased software | 1,030 | | | 489 | | | 541 | | | Capitalized software and other intangibles | 3,696 | | | 1,255 | | | 2,441 | | | Total | $ | 22,024 | | | $ | 11,472 | | | $ | 10,552 | | | | | | | | | December 31, 2023 | | | | | | | Customer relationships | $ | 14,669 | | | $ | 7,594 | | | $ | 7,075 | | | Acquired software and technology | 2,148 | | | 1,148 | | | 1,000 | | | Trade names | 641 | | | 356 | | | 285 | | | Purchased software | 1,087 | | | 520 | | | 567 | | | Capitalized software and other intangibles | 3,356 | | | 1,073 | | | 2,283 | | | Total | $ | 21,901 | | | $ | 10,691 | | | $ | 11,210 | |
Amortization expense associated with the above identifiable intangible assets was $586 million and $614 million for the three months ended June 30, 2024 and 2023, respectively, and $1.2 billion for both the six months ended June 30, 2024 and 2023.
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