Share-Based Compensation Plans And Other Incentive Plans (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option exercise price not less than value of common stock	100.00%
ESPP common stock payroll deductions, maximum percentage	20.00%
Proceeds from Issuance of Common Stock	$ 135	$ 165	$ 133
Shares available for future share-based award grants under the current compensation plan	19,700,000	20,400,000
Share-based compensation expense, net of forfeitures	94	120	146
Stock Options And Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options and stock appreciation rights exercisable condition in case of change of control (in months)	24 months
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average estimated fair value of employee stock options granted	$ 11.02	$ 9.52	$ 9.60
Unrecognized compensation expense, net of estimated forfeitures	21
Unrecognized compensation expense, period for recognition, years	2 years
Total intrinsic value of options exercised	38	85	59
Aggregate intrinsic value for options outstanding	119
Aggregate intrinsic value for options exercisable	103
Stock price market value	$ 67.08
Weighted average contractual life for options outstanding (in years)	5 years
Weighted average contractual life for options exercisable (in years)		4 years
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum limit for purchase of stock under ESPP	25,000
Purchase under ESPP lower than fair market value, percentage	85.00%
Shares purchased by employees	1,400,000	1,500,000	1,400,000
Employee Stock \| October First Through March Thirty First
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price paid by employees	$ 51.76	$ 43.02	$ 34.52
Employee Stock \| April First Through September Thirty
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price paid by employees	$ 53.79	$ 50.47	$ 42.96
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, net of estimated forfeitures	65
Unrecognized compensation expense, period for recognition, years	2 years
Total fair value of RS and RSU shares vested	160	138	144
Aggregate fair value of outstanding RSUs	110
Unvested RSUs cancelled	765,000	519,000	503,000
RSUs granted in period	1,235,000	1,558,000	1,657,000
Motorola Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, net of forfeitures	53	87	145
Long Range Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, net of forfeitures	$ 3	$ 4	$ 9
Minimum \| Stock Options And Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards contractual life	5 years
Vesting period	2 years
Minimum \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated option fair value forfeiture rate	10.00%
Maximum \| Stock Options And Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards contractual life	15 years
Vesting period	4 years
Maximum \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated option fair value forfeiture rate	50.00%

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Estimated Option Fair Value Forfeiture Rate

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Option Exercise Price Percentage to fair Value

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash inflow from the additional capital contribution to the entity.

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Discount rate from fair value on offering date that participants pay for shares.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The highest quantity of shares an employee can purchase under the plan per period.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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