Other Financial Data (Earnings Per Common Share) (Details) $ / shares in Units, shares in Millions		3 Months Ended								12 Months Ended
	Aug. 25, 2015 USD ($) $ / shares	Dec. 31, 2016 USD ($) $ / shares	Oct. 01, 2016 USD ($) $ / shares	Jul. 02, 2016 USD ($) $ / shares	Apr. 02, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares	Oct. 03, 2015 USD ($) $ / shares	Jul. 04, 2015 USD ($) $ / shares	Apr. 04, 2015 USD ($) $ / shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares
Basic earnings per common share:
Earnings (loss) from continuing operations, net of tax | $										$ 560,000,000	$ 640,000,000	$ (697,000,000)
Net earnings (loss) attributable to Motorola Solutions, Inc. | $		$ 243,000,000	$ 192,000,000	$ 107,000,000	$ 17,000,000	$ 279,000,000	$ 115,000,000	$ 142,000,000	$ 74,000,000	$ 560,000,000	$ 610,000,000	$ 1,299,000,000
Weighted average common shares outstanding (in shares)										169.6	199.6	245.6
Basic earnings (loss) per common share from continuing operations (US$ per share) | $ / shares		$ 1.47	$ 1.15	$ 0.62	$ 0.10	$ 1.58	$ 0.63	$ 0.72	$ 0.40	$ 3.30	$ 3.21	$ (2.84)
Basic earnings (loss) per common share attributable to Motorola Solutions, Inc. (US$ per share) | $ / shares		$ 1.47	$ 1.15	$ 0.62	$ 0.10	$ 1.60	$ 0.58	$ 0.68	$ 0.34	$ 3.30	$ 3.06	$ 5.29
Diluted earnings per common share:
Earnings (loss) from continuing operations, net of tax | $										$ 560,000,000	$ 640,000,000	$ (697,000,000)
Net earnings (loss) attributable to Motorola Solutions, Inc. | $		$ 243,000,000	$ 192,000,000	$ 107,000,000	$ 17,000,000	$ 279,000,000	$ 115,000,000	$ 142,000,000	$ 74,000,000	$ 560,000,000	$ 610,000,000	$ 1,299,000,000
Weighted average common shares outstanding (in shares)										169.6	199.6	245.6
Add effect of dilutive securities:
Share-based awards (in shares)										2.7	2.1	0.0
Senior Convertible Notes (in shares)										0.8	0.1	0.0
Diluted weighted average common shares outstanding (in shares)										173.1	201.8	245.6
Diluted earnings (loss) per common share from continuing operations (US$ per share) | $ / shares		$ 1.43	$ 1.13	$ 0.61	$ 0.10	$ 1.56	$ 0.63	$ 0.72	$ 0.40	$ 3.24	$ 3.17	$ (2.84)
Diluted earnings per common share attributable to Motorola Solutions, Inc. (US$ per share) | $ / shares		$ 1.43	$ 1.13	$ 0.61	$ 0.10	$ 1.57	$ 0.57	$ 0.68	$ 0.34	$ 3.24	$ 3.02	$ 5.29
Silver Lake Partners | Senior Convertible Notes | Convertible Debt
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt instrument face principal amount | $	$ 1,000,000,000
Debt instrument stated interest rate (percent)	2.00%
Convertible debt conversion ratio	0.0145985
Convertible debt conversion price (US$ per share) | $ / shares	$ 68.50
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from computation of dilutive shares due to antidilutive nature (in shares)										2.8	2.7	6.3
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from computation of dilutive shares due to antidilutive nature (in shares)										0.3	0.3	1.1