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Impairment, Restructuring Charges and Other Related Closure Costs - Summary of Impairment, Restructuring Charges and Other Related Closure Costs (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |  |
Impairment | $ (13,000,000) | $ 0 | $ (8,000,000) | $ (16,000,000)
Restructuring charges |  | (42,000,000) | (75,000,000) | (37,000,000)
Other related closure costs |  | (3,000,000) | (10,000,000) | (12,000,000)
Total impairment, restructuring charges and other related closure costs |  | (45,000,000) | (93,000,000) | (65,000,000)
Set-top Box Restructuring Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  | (34,000,000) | (74,000,000) |
Other related closure costs |  |  | (9,000,000) |
Total impairment, restructuring charges and other related closure costs |  | (34,000,000) | (83,000,000) |
EPS Restructuring Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  | 5,000,000 | (1,000,000) | (36,000,000)
Total impairment, restructuring charges and other related closure costs |  | 5,000,000 | (1,000,000) | (36,000,000)
Long-lived Asset Impairment Charge [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Impairment |  |  | (8,000,000) | (16,000,000)
Total impairment, restructuring charges and other related closure costs |  |  | (8,000,000) | (16,000,000)
$600-650 Million Net Opex Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other related closure costs |  | (3,000,000) | (1,000,000) | (2,000,000)
Total impairment, restructuring charges and other related closure costs |  | (3,000,000) | $ (1,000,000) | (2,000,000)
Manufacturing Consolidation [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | (1,000,000)
Other related closure costs |  |  |  | (10,000,000)
Total impairment, restructuring charges and other related closure costs |  |  |  | $ (11,000,000)
Other Restructuring Initiatives [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  | (13,000,000) |  |
Total impairment, restructuring charges and other related closure costs |  | $ (13,000,000) |  |

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