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Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Definite life intangible assets: |  |
Accumulated Amortization | $ (161) | $ (134)
Net Carrying Value | 915 |
Gross Carrying Value |  |
Total intangible assets | 3,742 | 2,635
Net Carrying Value |  |
Total intangible assets | 3,581 | 2,501
FCC licenses |  |
Indefinite life intangible assets: |  |
Gross Carrying Value | 2,084 | 2,084
Net Carrying Value | 2,084 | 2,084
Trademarks |  |
Indefinite life intangible assets: |  |
Gross Carrying Value | 251 | 251
Net Carrying Value | 251 | 251
Trademarks | Pandora |  |
Indefinite life intangible assets: |  |
Gross Carrying Value | 331 |
Net Carrying Value | $ 331 |
OEM relationships |  |
Definite life intangible assets: |  |
Weighted Average Useful Lives | 15 years |
Gross Carrying Value | $ 220 | 220
Accumulated Amortization | (79) | (76)
Net Carrying Value | $ 141 | 144
Customer relationships | Pandora |  |
Definite life intangible assets: |  |
Weighted Average Useful Lives | 8 years |
Gross Carrying Value | $ 403 |
Accumulated Amortization | (9) |
Net Carrying Value | $ 394 |
Licensing agreements |  |
Definite life intangible assets: |  |
Weighted Average Useful Lives | 12 years |
Gross Carrying Value | $ 45 | 45
Accumulated Amortization | (39) | (38)
Net Carrying Value | $ 6 | 7
Software and technology |  |
Definite life intangible assets: |  |
Weighted Average Useful Lives | 7 years |
Gross Carrying Value | $ 35 | 35
Accumulated Amortization | (21) | (20)
Net Carrying Value | 14 | $ 15
Software and technology | Pandora |  |
Definite life intangible assets: |  |
Gross Carrying Value | 373 |
Accumulated Amortization | (13) |
Net Carrying Value | $ 360 |

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