XML 138 R121.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Intangible Assets and Goodwill - Recent Acquisitions (Details) - USD ($) $ in Millions |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 29, 2024 | Jul. 01, 2024 | Feb. 13, 2024 | Dec. 15, 2023 | Dec. 14, 2022 | Oct. 25, 2022 | Aug. 08, 2022 | May 12, 2022 | Apr. 19, 2022 | Mar. 23, 2022 | Mar. 03, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  |  | $ 3,526 | $ 3,401 | $ 3,312
Gain on TETRA Ireland equity method investment |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 21
3tc Software |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition | $ 22 |  |  |  |  |  |  |  |  |  |  |  |  |
Share value | $ 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 19 |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets | 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Net liabilities | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
3tc Software | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |
Noggin |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  | $ 91 |  |  |  |  |  |  |  |  |  |  |  |
Share value |  | $ 19 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ 50 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | 53 |  |  |  |  |  |  |  |  |  |  |  |
Net liabilities |  | 12 |  |  |  |  |  |  |  |  |  |  |  |
Noggin | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Noggin | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 45 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 13 years |  |  |  |  |  |  |  |  |  |  |  |
Noggin | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 7 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |
Vehicle Location And Management Solutions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  | $ 132 |  |  |  |  |  |  |  |  |  |  |  |
Share value |  | $ 3 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ 62 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | 65 |  |  |  |  |  |  |  |  |  |  |  |
Net liabilities |  | 5 |  |  |  |  |  |  |  |  |  |  |  |
Vehicle Location And Management Solutions | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 11 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 9 years |  |  |  |  |  |  |  |  |  |  |  |
Vehicle Location And Management Solutions | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 3 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |
Vehicle Location And Management Solutions | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 51 |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  | 18 years |  |  |  |  |  |  |  |  |  |  |  |
Silent Sentinel |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  | $ 37 |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 16 |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  | 22 |  |  |  |  |  |  |  |  |  |  |
Net liabilities |  |  | 1 |  |  |  |  |  |  |  |  |  |  |
Silent Sentinel | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |
Silent Sentinel | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  | $ 11 |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Silent Sentinel | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  | 14 years |  |  |  |  |  |  |  |  |  |  |
IPVideo |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  | $ 170 |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  |  | $ 15 |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Share-based compensation fair value |  |  |  | $ 5 |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 100 |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  | 83 |  |  |  |  |  |  |  |  |  |
Acquired liabilities |  |  |  | 13 |  |  |  |  |  |  |  |  |  |
IPVideo | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  | 8 |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  |  |  | 8 years |  |
IPVideo | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  | 69 |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  |  |  | 15 years |  |
IPVideo | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  | $ 6 |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  |  |  | 12 years |  |
Rave Mobile |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  | $ 553 |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |
Share-based compensation fair value |  |  |  |  | $ 2 |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 400 |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 212 |  |  |  |  |  |  |  |  |
Net liabilities |  |  |  |  | 59 |  |  |  |  |  |  |  |  |
Rave Mobile | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | $ 9 |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  | 9 years |  |  |  |  |  |  |  |  |
Rave Mobile | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | $ 82 |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  | 17 years |  |  |  |  |  |  |  |  |
Rave Mobile | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | $ 121 |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  | 17 years |  |  |  |  |  |  |  |  |
Futurecom Systems Group, ULC |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  | $ 30 |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 10 |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  | $ 11 |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |
Net liabilities |  |  |  |  |  | $ 9 |  |  |  |  |  |  |  |
Barrett Communications Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  | $ 18 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  | $ 3 |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |
Recognized identifiable assets acquired and liabilities assumed, net assets |  |  |  |  |  |  | $ 14 |  |  |  |  |  |  |
Barrett Communications Pty Ltd | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Barrett Communications Pty Ltd | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  | $ 2 |  |  |  |  |  |  |
Videotec S.p.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  |  | $ 23 |  |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |
Share-based compensation fair value |  |  |  |  |  |  |  | $ 4 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | 9 |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  | 6 |  |  |  |  |  |
Recognized identifiable assets acquired and liabilities assumed, net assets |  |  |  |  |  |  |  | $ 8 |  |  |  |  |  |
Videotec S.p.A. | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |
Calipsa, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  |  |  | $ 39 |  |  |  |  |
Share-based compensation arrangement, award requisite service period |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Share-based compensation fair value |  |  |  |  |  |  |  |  | $ 4 |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | 24 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  | 21 |  |  |  |  |
Net liabilities |  |  |  |  |  |  |  |  | 6 |  |  |  |  |
Calipsa, Inc | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  | $ 20 |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  | 15 years |  |  |  |  |
Calipsa, Inc | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  | $ 1 |  |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |
TETRA Ireland Communications Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  |  |  |  | $ 120 |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | 47 |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  | 90 |  |  |  |
Recognized identifiable assets acquired and liabilities assumed, net assets |  |  |  |  |  |  |  |  |  | 6 |  |  |  |
Gain on TETRA Ireland equity method investment |  |  |  |  |  |  |  |  |  | 21 |  |  |  |
TETRA Ireland Communications Limited | Trade names |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  | $ 7 |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  | 14 years |  |  |  |
TETRA Ireland Communications Limited | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  | $ 83 |  |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  | 12 years |  |  |  |
Ava Security Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  |  |  |  |  | $ 388 |  |  |
Share-based compensation arrangement, award requisite service period |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |
Share-based compensation fair value |  |  |  |  |  |  |  |  |  |  | $ 7 |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  | 267 |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  | 165 |  |  |
Net liabilities |  |  |  |  |  |  |  |  |  |  | 44 |  |  |
Ava Security Limited | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  | $ 144 |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  |  | 14 years |  |  |
Ava Security Limited | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  | $ 21 |  |  |
Intangible assets estimated useful lives |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |

X
- Definition Business Combination, Consideration Transferred, Share-Based Compensation + References No definition available. + Details
Name: | msi_BusinessCombinationConsiderationTransferredShareBasedCompensation
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets + References No definition available. + Details
Name: | msi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAssets
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Liabilities + References No definition available. + Details
Name: | msi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetLiabilities
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 8 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479637/805-30-30-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 7 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479637/805-30-30-7 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 35 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479613/805-30-35-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479668/805-30-25-6 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of input used to measure contingent consideration liability from business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-37 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column C)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column C)(Footnote 6)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column C)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(7)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
Name: | us-gaap_DebtAndEquitySecuritiesRealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482548/350-20-55-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482598/350-20-45-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_A3tcSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TechnologyBasedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_NogginMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_VehicleLocationAndManagementSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_SilentSentinelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_IPVideoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_RaveMobileMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_FuturecomSystemsGroupULCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_BarrettCommunicationsPtyLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_VideotecSpAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_CalipsaIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_TETRAIrelandCommunicationsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=msi_AvaSecurityLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |