Consolidated Statements Of Operations - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net sales from products	$ 3,649,000,000	$ 3,676,000,000	$ 3,807,000,000
Net sales from services	2,389,000,000	2,019,000,000	2,074,000,000
Net sales	6,038,000,000	5,695,000,000	5,881,000,000
Costs of products sales	1,649,000,000	1,625,000,000	1,678,000,000
Costs of services sales	1,520,000,000	1,351,000,000	1,372,000,000
Costs of sales	3,169,000,000	2,976,000,000	3,050,000,000
Gross margin	2,869,000,000	2,719,000,000	2,831,000,000
Selling, general and administrative expenses	1,000,000,000	1,021,000,000	1,184,000,000
Research and development expenditures	553,000,000	620,000,000	681,000,000
Other charges	249,000,000	84,000,000	1,972,000,000
Operating earnings	1,067,000,000	994,000,000	(1,006,000,000)
Other income (expense):
Interest expense, net	(205,000,000)	(173,000,000)	(126,000,000)
Gains (losses) on sales of investments and businesses, net	(6,000,000)	107,000,000	5,000,000
Other	(12,000,000)	(11,000,000)	(34,000,000)
Total other expense	(223,000,000)	(77,000,000)	(155,000,000)
Earnings (loss) from continuing operations before income taxes	844,000,000	917,000,000	(1,161,000,000)
Income tax expense (benefit)	282,000,000	274,000,000	(465,000,000)
Earnings (loss) from continuing operations	562,000,000	643,000,000	(696,000,000)
Earnings (loss) from discontinued operations, net of tax	0	(30,000,000)	1,996,000,000
Net earnings	562,000,000	613,000,000	1,300,000,000
Less: Earnings attributable to noncontrolling interests	2,000,000	3,000,000	1,000,000
Net earnings attributable to Motorola Solutions, Inc.	560,000,000	610,000,000	1,299,000,000
Amounts attributable to Motorola Solutions, Inc. common stockholders:
Earnings (loss) from continuing operations, net of tax	560,000,000	640,000,000	(697,000,000)
Earnings (loss) from discontinued operations, net of tax	0	(30,000,000)	1,996,000,000
Net earnings attributable to Motorola Solutions, Inc.	$ 560,000,000	$ 610,000,000	$ 1,299,000,000
Basic:
Continuing operations (US$ per share)	$ 3.30	$ 3.21	$ (2.84)
Discontinued operations (US$ per share)	0.00	(0.15)	8.13
Basic (US$ per share):	3.30	3.06	5.29
Diluted:
Continuing operations (US$ per share)	3.24	3.17	(2.84)
Discontinued operations (US$ per share)	0.00	(0.15)	8.13
Diluted (US$ per share):	$ 3.24	$ 3.02	$ 5.29
Weighted average common shares outstanding:
Basic (in shares)	169.6	199.6	245.6
Diluted (in shares)	173.1	201.8	245.6
Dividends declared per share (US$ per share)	$ 1.70	$ 1.43	$ 1.30