Condensed Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Income Statement [Abstract]
Net sales from products	$ 1,563	$ 1,453	$ 3,007	$ 2,827
Net sales from services	585	531	1,097	991
Net sales	2,148	1,984	4,104	3,818
Costs of product sales	712	645	1,370	1,269
Costs of services sales	376	332	701	618
Costs of sales	1,088	977	2,071	1,887
Gross margin	1,060	1,007	2,033	1,931
Selling, general and administrative expenses	496	482	968	943
Research and development expenditures	269	260	523	499
Other charges	17	106	32	161
Operating earnings	278	159	510	328
Other income (expense):
Interest expense, net	(16)	(21)	(30)	(41)
Gain on sales of investments and businesses, net	3	1	20	19
Other	(25)	(78)	(16)	(73)
Total other expense	(38)	(98)	(26)	(95)
Earnings from continuing operations before income taxes	240	61	484	233
Income tax expense (benefit)	63	13	148	(176)
Earnings from continuing operations	177	48	336	409
Earnings from discontinued operations, net of tax	5	299	3	429
Net earnings	182	347	339	838
Less: Loss attributable to noncontrolling interests	0	(2)	0	(8)
Net earnings attributable to Motorola Solutions, Inc.	182	349	339	846
Amounts attributable to Motorola Solutions, Inc. common stockholders:
Earnings from continuing operations, net of tax	177	50	336	417
Earnings from discontinued operations, net of tax	5	299	3	429
Net earnings attributable to Motorola Solutions, Inc.	$ 182	$ 349	$ 339	$ 846
Basic:
Continuing operations	$ 0.61	$ 0.15	$ 1.11	$ 1.23
Discontinued operations	$ 0.02	$ 0.87	$ 0.01	$ 1.26
Earnings per common share	$ 0.63	$ 1.02	$ 1.12	$ 2.49
Diluted:
Continuing operations	$ 0.60	$ 0.14	$ 1.09	$ 1.20
Discontinued operations	$ 0.01	$ 0.86	$ 0.01	$ 1.24
Earnings per common share	$ 0.61	$ 1.00	$ 1.10	$ 2.44
Weighted average common shares outstanding:
Basic	290.6	341.2	302.1	339.3
Diluted	296.1	348.5	308.1	346.3
Dividends paid per share	$ 0.22	$ 0	$ 0.44	$ 0