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WESTERN DIGITAL CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Intangible assets as of July 1, 2011 were as follows:
Weighted Average
Amortization Period
Gross Carrying
Amount
Accumulated
Amortization
Net Carrying
Amount
(in years) (in millions) (in millions) (in millions)
Existing technology ............... 9 $127 $59 $68
Supply agreement ................ 2 6 3 3
Total .......................... $133 $62 $71
Amortization expense for intangible assets was $79 million, $17 million and $12 million for 2012, 2011 and
2010, respectively. Amortization expense in 2012 related to the Acquisition was $63 million. As of June 29, 2012,
estimated future amortization expense for intangible assets is $207 million for 2013, $193 million for 2014,
$138 million for 2015, $59 million for 2016 and $31 million for 2017.
Note 13. Pensions and Other Post-retirement Benefit Plans
In connection with the Acquisition, the Company assumed pension and other post-retirement benefit plans in
various countries, including Japan, the Philippines, Taiwan and Thailand. The Company’s principal plans are in
Japan. All pension and other post-retirement benefit plans outside of the Company’s Japanese plans were immaterial
to the Company’s consolidated financial statements.
Obligations and Funded Status
The changes in the benefit obligations and plan assets for the Japanese defined benefit pension plans were as fol-
lows for the period from the Closing Date through June 29, 2012 (in millions):
Change in benefit obligation:
Benefit obligation at beginning of period .......................................... $279
Service cost ............................................................... 4
Interest cost ............................................................... 2
Benefits paid .............................................................. (2)
Non-U.S. currency movement ................................................. 3
Benefit obligation at end of period ................................................ 286
Change in plan assets:
Fair value of plan assets at beginning of period ...................................... 162
Actual return on plan assets ................................................... (1)
Employer contributions ...................................................... 6
Benefits paid .............................................................. (2)
Non-U.S. currency movement ................................................. 2
Fair value of plan assets at end of period ............................................ 167
Unfunded status at end of year ..................................................... $(119)
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