NOTES TO FINANCIAL STATEMENTS
NOTE 10 INTANGIBLE ASSETS
The components of finite-lived intangible assets were as follows:
| (In millions) | ||||||
|---|---|---|---|---|---|---|
| June 30, | 2008 | 2007 | ||||
| Gross carrying amount | Accumulated amortization | Net carrying amount | Gross carrying amount | Accumulated amortization | Net carrying amount | |
| Contract-based | $1,074 | $ (796) | $ 278 | $ ,988 | $ ,(727) | $261 |
| Technology-based | 1,677 | (672) | 1,005 | 916 | (407) | 509 |
| Marketing-related | 171 | (65) | 106 | 57 | (39) | 18 |
| Customer-related | 708 | (124) | 584 | 122 | (32) | 90 |
| Total | $3,630 | $(1,657) | $1,973 | $2,083 | $(1,205) | $878 |
During fiscal year 2008 and 2007, we recorded additions to intangible assets of $1.6 billion and $473 million, respectively. We estimate that we have no significant residual value related to our intangible assets. The components of finite-lived intangible assets acquired during fiscal years 2008 and 2007 were as follows:
| (In millions) | ||||
|---|---|---|---|---|
| June 30, | 2008 | 2007 | ||
| Amount | Weighted average life | Amount | Weighted average life | |
| Contract-based | $ )91 | 6 years | $ 57 | 5 years |
| Technology-based | 787 | 4 years | 333 | 4 years |
| Marketing-related | 116 | 5 years | 14 | 4 years |
| Customer-related | 589 | 6 years | 69 | 5 years |
| Total | $1,583 | $473 | ||
Intangible asset additions included $694 million of technology-based intangible assets with a weighted-average life of four years, and $782 million of other intangible assets with a weighted-average life of six years, related to the acquisitions of aQuantive, FAST, Danger, and 18 other entities acquired. See Note 8—Acquisitions.
Acquired intangibles generally are amortized on a straight-line basis over weighted average lives. Intangible assets amortization expense was $472 million for fiscal year 2008, $236 million for fiscal year 2007, and $127 million for fiscal year 2006. The following table outlines the estimated future amortization expense related to intangible assets as of June 30, 2008:
| (In millions) | |
|---|---|
| Year Ended June 30, | Amount |
| 2009 | $ 543 |
| 2010 | 495 |
| 2011 | 408 |
| 2012 | 279 |
| 2013 and thereafter | 248 |
| Total | $1,973 |