Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Net sales from products	$ 6,363	$ 6,068	$ 5,616
Net sales from services	2,335	2,135	2,001
Net sales	8,698	8,203	7,617
Costs of product sales	2,844	2,723	2,523
Costs of services sales	1,506	1,334	1,282
Costs of sales	4,350	4,057	3,805
Gross margin	4,348	4,146	3,812
Selling, general and administrative expenses	1,963	1,912	1,874
Research and development expenditures	1,075	1,035	1,037
Other charges	54	341	150
Operating earnings	1,256	858	751
Other income (expense):
Interest expense, net	(66)	(74)	(129)
Gain on sales of investments and businesses, net	39	23	49
Other	(14)	(69)	(7)
Total other expense	(41)	(120)	(87)
Earnings from continuing operations before income taxes	1,215	738	664
Income tax expense (benefit)	337	(3)	403
Earnings from continuing operations	878	741	261
Earnings from discontinued operations, net of tax	3	411	389
Net earnings	881	1,152	650
Less: Earnings (loss) attributable to noncontrolling interest	0	(6)	17
Net earnings attributable to Motorola Solutions, Inc.	881	1,158	633
Amounts attributable to Motorola Solutions, Inc. common stockholders:
Earnings from continuing operations, net of tax	878	747	244
Earnings from discontinued operations, net of tax	3	411	389
Net earnings attributable to Motorola Solutions, Inc.	$ 881	$ 1,158	$ 633
Basic:
Continuing operations (US$ per share)	$ 3.01	$ 2.24	$ 0.73
Discontinued operations (US$ per share)	$ 0.00	$ 1.23	$ 1.17
Basic (US$ per share):	$ 3.01	$ 3.47	$ 1.90
Diluted:
Continuing operations (US$ per share)	$ 2.95	$ 2.20	$ 0.72
Discontinued operations (US$ per share)	$ 0.01	$ 1.21	$ 1.15
Diluted (US$ per share):	$ 2.96	$ 3.41	$ 1.87
Weighted average common shares outstanding:
Basic (shares)	292.1	333.8	333.3
Diluted (shares)	297.4	339.7	338.1
Dividends declared per share (US$ per share)	$ 0.96	$ 0.22	$ 0.00