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Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Definite life intangible assets: |  |
Accumulated Amortization | $ (415) | $ (275)
Total definite life intangible assets, net | 695 |
Gross Carrying Value |  |
Total intangible assets | 3,755 | 3,742
Net Carrying Value |  |
Total intangible assets | 3,340 | 3,467
FCC licenses |  |
Indefinite life intangible assets: |  |
Net Carrying Value | 2,084 | 2,084
Trademarks |  |
Indefinite life intangible assets: |  |
Net Carrying Value | 250 | 251
Trademarks | Pandora And Stitcher Acquisition |  |
Indefinite life intangible assets: |  |
Net Carrying Value | $ 311 | 331
OEM relationships |  |
Definite life intangible assets: |  |
Weighted average useful lives (years) | 15 years |
Gross Carrying Value | $ 220 | 220
Accumulated Amortization | (105) | (90)
Total definite life intangible assets, net | $ 115 | 130
Licensing agreements |  |
Definite life intangible assets: |  |
Weighted average useful lives (years) | 12 years |
Gross Carrying Value | $ 45 | 45
Accumulated Amortization | (45) | (42)
Total definite life intangible assets, net | $ 0 | 3
Customer relationships | Pandora And Stitcher Acquisition |  |
Definite life intangible assets: |  |
Weighted average useful lives (years) | 8 years |
Gross Carrying Value | $ 441 | 403
Accumulated Amortization | (104) | (49)
Total definite life intangible assets, net | $ 337 | 354
Software and technology |  |
Definite life intangible assets: |  |
Weighted average useful lives (years) | 7 years |
Gross Carrying Value | $ 31 | 35
Accumulated Amortization | (16) | (25)
Total definite life intangible assets, net | $ 15 | 10
Software and technology | Pandora And Stitcher Acquisition |  |
Definite life intangible assets: |  |
Weighted average useful lives (years) | 5 years |
Gross Carrying Value | $ 373 | 373
Accumulated Amortization | (145) | (69)
Total definite life intangible assets, net | $ 228 | $ 304

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