Debt and Credit Facilities (Details) - USD ($)	3 Months Ended
Apr. 01, 2017	May 04, 2017
Motorola Solutions Credit Agreement 2014 \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility borrowing capacity	$ 2,100,000,000.0
Borrowings outstanding	0
Motorola Solutions Credit Agreement 2014 \| Letter of Credit
Debt Instrument [Line Items]
Line of credit facility borrowing capacity	500,000,000
Fronting commitment sub-limit	$ 450,000,000
2017 Revolving Credit Facility \| Revolving Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Line of credit facility borrowing capacity		$ 2,200,000,000.0
2017 Revolving Credit Facility \| Letter of Credit \| Subsequent Event
Debt Instrument [Line Items]
Line of credit facility borrowing capacity		$ 500,000,000

Line of Credit Facility, Fronting Commitment Sub-Limit, Maximum Borrowing Capacity

No definition available.

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Namespace Prefix:	msi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Period Type:	duration

- Details

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- Details

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Balance Type:
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- Details

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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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- Details

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