Goodwill and Intangible Assets (Tables)
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12 Months Ended |
Dec. 31, 2018 |
| Goodwill And Intangible Assets [Line Items] |
|
| Schedule of Goodwill |
| | Note 12: Goodwill and Intangible Assets |
| | | | | | | | | | | | | | | | | | | | | | | | | | Goodwill |
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| | | NBCUniversal | | | | (in millions) | Cable Communications |
| Cable Networks |
| Broadcast Television |
| Filmed Entertainment |
| Theme Parks |
| Sky |
| Corporate and Other |
| Total |
| Balance, December 31, 2016 | $ | 12,645 |
| $ | 13,183 |
| $ | 806 |
| $ | 2,993 |
| $ | 6,341 |
| $ | — |
| $ | 12 |
| $ | 35,980 |
| Acquisitions | 140 |
| 241 |
| — |
| 32 |
| — |
| — |
| 5 |
| 418 |
| Dispositions | — |
| — |
| — |
| — |
| — |
| — |
| (11 | ) | (11 | ) | Adjustments(a) | (1 | ) | 1 |
| — |
| 185 |
| — |
| — |
| 1 |
| 186 |
| Foreign currency translation | — |
| 2 |
| — |
| 2 |
| 203 |
| — |
| — |
| 207 |
| Balance, December 31, 2017 | 12,784 |
| 13,427 |
| 806 |
| 3,212 |
| 6,544 |
| — |
| 7 |
| 36,780 |
| Acquisitions(b) | — |
| — |
| 36 |
| — |
| — |
| 29,889 |
| — |
| 29,925 |
| Dispositions | — |
| — |
| — |
| (8 | ) | — |
| — |
| (5 | ) | (13 | ) | Adjustments | — |
| (13 | ) | 1 |
| (9 | ) | — |
| — |
| — |
| (21 | ) | Foreign currency translation | — |
| (7 | ) | — |
| (11 | ) | 140 |
| (639 | ) | — |
| (517 | ) | Balance, December 31, 2018 | $ | 12,784 |
| $ | 13,407 |
| $ | 843 |
| $ | 3,184 |
| $ | 6,684 |
| $ | 29,250 |
| $ | 2 |
| $ | 66,154 |
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| | (a) | Adjustments in 2017 primarily included the updated allocation of the purchase price for DreamWorks Animation. |
| | (b) | Acquisitions in 2018 primarily included the Sky acquisition. As of December 31, 2018, all goodwill resulting from the Sky acquisition has been presented in the Sky segment. Our evaluation of reporting units and assignment of goodwill resulting from the Sky acquisition are preliminary and subject to change. We will finalize the analysis no later than one year from the acquisition date. See Note 8 for further information on the Sky acquisition. |
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| Other Intangible Assets |
| | | | | | | | | | | | | | | Intangible Assets | | | | | | | | 2018(a) | 2017 | December 31 (in millions) | Weighted-Average Original Useful Life as of December 31, 2018 | Gross Carrying Amount |
| Accumulated Amortization |
| Gross Carrying Amount |
| Accumulated Amortization |
| Indefinite-Lived Intangible Assets: | | | | | | Franchise rights | N/A | $ | 59,365 |
| | $ | 59,364 |
| | Trade names | N/A | 9,633 |
| | 2,981 |
| | FCC licenses | N/A | 2,333 |
| | 2,238 |
| | Finite-Lived Intangible Assets: | | | | | | Customer relationships | 16 years | 25,046 |
| $ | (6,682 | ) | 13,612 |
| $ | (5,819 | ) | Software | 5 years | 11,395 |
| (5,990 | ) | 8,258 |
| (4,846 | ) | Patents and other technology rights | 7 years | 260 |
| (234 | ) | 259 |
| (221 | ) | Other agreements and rights | 18 years | 3,885 |
| (1,288 | ) | 2,736 |
| (1,065 | ) | Total | | $ | 111,917 |
| $ | (14,194 | ) | $ | 89,448 |
| $ | (11,951 | ) |
| | (a) | In 2018, we recorded intangible assets in connection with the Sky acquisition, which primarily consisted of customer relationships and trade names (see Note 8 for additional information). |
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| Amortization of Intangible Assets |
| | | | | Estimated Amortization Expense of Finite-Lived Intangible Assets | | (in millions) | | 2019 | $ | 3,719 |
| 2020 | $ | 3,490 |
| 2021 | $ | 3,104 |
| 2022 | $ | 2,689 |
| 2023 | $ | 2,260 |
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| NBCUniversal Media LLC [Member] |
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| Goodwill And Intangible Assets [Line Items] |
|
| Schedule of Goodwill |
| | | | | | | | | | | | | | | | | Goodwill |
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| (in millions) | Cable Networks |
| Broadcast Television |
| Filmed Entertainment |
| Theme Parks |
| Total |
| Balance, December 31, 2016 | $ | 13,183 |
| $ | 806 |
| $ | 2,993 |
| $ | 6,341 |
| $ | 23,323 |
| Acquisitions | 241 |
| — |
| 32 |
| — |
| 273 |
| Adjustments(a) | 1 |
| — |
| 185 |
| — |
| 186 |
| Foreign currency translation | 2 |
| — |
| 2 |
| 203 |
| 207 |
| Balance, December 31, 2017 | 13,427 |
| 806 |
| 3,212 |
| 6,544 |
| 23,989 |
| Acquisitions | — |
| 36 |
| — |
| — |
| 36 |
| Dispositions | — |
| — |
| (8 | ) | — |
| (8 | ) | Adjustments | (13 | ) | 1 |
| (9 | ) | — |
| (21 | ) | Foreign currency translation | (7 | ) | — |
| (11 | ) | 140 |
| 122 |
| Balance, December 31, 2018 | $ | 13,407 |
| $ | 843 |
| $ | 3,184 |
| $ | 6,684 |
| $ | 24,118 |
|
| | (a) | Adjustments in 2017 primarily included the updated allocation of the purchase price for DreamWorks Animation. |
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| Other Intangible Assets |
| | | | | | | | | | | | | | | Intangible Assets | | | | | | | | 2018 | 2017 | December 31 (in millions) | Weighted-Average Original Useful Life as of December 31, 2018 | Gross Carrying Amount |
| Accumulated Amortization |
| Gross Carrying Amount |
| Accumulated Amortization |
| Finite-Lived Intangible Assets: | | | | | | Customer relationships | 19 years | $ | 13,269 |
| $ | (6,283 | ) | $ | 13,301 |
| $ | (5,643 | ) | Software | 5 years | 1,779 |
| (932 | ) | 1,516 |
| (737 | ) | Other | 19 years | 3,619 |
| (1,375 | ) | 2,580 |
| (1,205 | ) | Indefinite-Lived Intangible Assets: | | | | | | Trade names | N/A | 2,981 |
| | 2,981 |
| | FCC licenses | N/A | 608 |
| | 513 |
| | Total | | $ | 22,256 |
| $ | (8,590 | ) | $ | 20,891 |
| $ | (7,585 | ) |
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| Amortization of Intangible Assets |
| | | | | Estimated Amortization Expense of Finite-Lived Intangible Assets | | (in millions) | | 2019 | $ | 1,059 |
| 2020 | $ | 1,039 |
| 2021 | $ | 936 |
| 2022 | $ | 861 |
| 2023 | $ | 839 |
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