Segments and Geographic Information - Gross Profit to Consolidated Income Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment gross profit	$ 1,130	$ 1,113
Subscriber acquisition costs	(86)	(99)
Sales and marketing	(217)	(225)
Engineering, design and development	(64)	(71)
General and administrative	(121)	(107)
Depreciation and amortization	(132)	(132)
Share-based payment expense	(51)	(55)
Impairment, restructuring and acquisition costs	(245)	0
Income before income taxes	157	373
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Subscriber acquisition costs	(86)	(99)
Sales and marketing	(202)	(208)
Engineering, design and development	(54)	(60)
General and administrative	(106)	(91)
Depreciation and amortization	(132)	(132)
Share-based payment expense	(51)	(55)
Impairment, restructuring and acquisition costs	(245)
Total other (expense) income	(97)	(95)
Cost of Sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based payment expense	(11)	(11)
Sales and Marketing
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based payment expense	(15)	(17)
Research and Development Expense
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based payment expense	(10)	(11)
General and Administrative Expense
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based payment expense	$ (15)	$ (16)

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Hardware subsidies paid to radio manufacturers, distributors and automakers; subsidies paid for chip sets and certain other components used in manufacturing radios; device royalties for certain radios and chipsets; commissions paid to automakers and retailers; product warranty obligations; freight; and provisions for inventory allowances attributable to inventory consumed in our OEM and retail distribution channels.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of expense classified as other.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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