Condensed Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Income Statement [Abstract]
Net sales from products	$ 1,567	$ 1,552	$ 4,574	$ 4,379
Net sales from services	586	533	1,683	1,524
Net sales	2,153	2,085	6,257	5,903
Costs of product sales	682	679	2,052	1,949
Costs of services sales	384	351	1,085	968
Costs of sales	1,066	1,030	3,137	2,917
Gross margin	1,087	1,055	3,120	2,986
Selling, general and administrative expenses	485	471	1,454	1,414
Research and development expenditures	262	270	785	769
Other charges	16	60	48	221
Operating earnings	324	254	833	582
Other income (expense):
Interest expense, net	(16)	(18)	(46)	(59)
Gain on sales of investments and businesses, net	19	2	39	21
Other	(3)	0	(18)	(73)
Total other expense	0	(16)	(25)	(111)
Earnings from continuing operations before income taxes	324	238	808	471
Income tax expense (benefit)	118	83	266	(93)
Earnings from continuing operations	206	155	542	564
Earnings (loss) from discontinued operations, net of tax	0	(25)	3	404
Net earnings	206	130	545	968
Less: Earnings (loss) attributable to noncontrolling interests	0	2	0	(6)
Net earnings attributable to Motorola Solutions, Inc.	206	128	545	974
Amounts attributable to Motorola Solutions, Inc. common stockholders:
Earnings from continuing operations, net of tax	206	153	542	570
Earnings (loss) from discontinued operations, net of tax	0	(25)	3	404
Net earnings attributable to Motorola Solutions, Inc.	$ 206	$ 128	$ 545	$ 974
Basic:
Continuing operations (US$ per share)	$ 0.73	$ 0.46	$ 1.83	$ 1.69
Discontinued operations (US$ per share)	$ 0.00	$ (0.08)	$ 0.01	$ 1.20
Basic (US$ per share):	$ 0.73	$ 0.38	$ 1.84	$ 2.89
Diluted:
Continuing operations (US$ per share)	$ 0.72	$ 0.45	$ 1.80	$ 1.66
Discontinued operations (US$ per share)	$ 0.00	$ (0.07)	$ 0.01	$ 1.18
Diluted (US$ per share):	$ 0.72	$ 0.38	$ 1.81	$ 2.84
Weighted average common shares outstanding:
Basic	283.1	335.4	296.1	337.3
Diluted	287.4	339.5	301.5	343.4
Dividends declared per share	$ 0.26	$ 0.00	$ 0.70	$ 0.00