Quarterly And Other Financial Data (Unaudited) (Schedule Of Quarterly Financial Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended		3 Months Ended																12 Months Ended
	Jul. 31, 2014	Jul. 30, 2014	Dec. 31, 2014		Sep. 27, 2014		Jun. 28, 2014		Mar. 29, 2014		Dec. 31, 2013		Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Results
Net sales			$ 1,824		$ 1,436		$ 1,393		$ 1,228		$ 1,817		$ 1,517		$ 1,497		$ 1,396		$ 5,881	$ 6,227	$ 6,269
Costs of sales			911		751		737		651		916		752		747		703		3,050	3,118	3,075
Gross margin			913		685		656		577		901		765		750		693		2,831	3,109	3,194
Selling, general and administrative expenses			282		287		308		307		347		319		339		325		1,184	1,330	1,472
Research and development expenditures			165		166		176		174		196		183		195		187		681	761	790
Other charges			1,924		25		34		(11)		34		17		13		7		1,972	71	12
Operating earnings (loss)			(1,458)		207		138		107		324		246		203		174		(1,006)	947	920
Earnings (loss) from continuing operations			(926)	[1]	66	[1]	78	[1]	85	[1]	292	[1]	261	[1]	223	[1]	157	[1]
Net earnings			$ 201	[1]	$ 147	[1]	$ 824	[1]	$ 127	[1]	$ 342	[1]	$ 307	[1]	$ 258	[1]	$ 192	[1]	$ 1,299	$ 1,099	$ 881
Earnings (loss) from Continuing operations:
Basic earnings (loss) per common share (US$ per share)			$ (4.02)	[1]	$ 0.27	[1]	$ 0.31	[1]	$ 0.33	[1]	$ 1.13	[1]	$ 1.00	[1]	$ 0.83	[1]	$ 0.57	[1]	$ (2.84)	$ 3.51	$ 2.29
Diluted earnings (loss) per common share (US$ per share)			$ (4.02)	[1]	$ 0.27	[1]	$ 0.30	[1]	$ 0.33	[1]	$ 1.12	[1]	$ 0.98	[1]	$ 0.81	[1]	$ 0.56	[1]	$ (2.84)	$ 3.45	$ 2.25
Basic earnings per common share (US$ per share)			$ 0.87	[1]	$ 0.60	[1]	$ 3.25	[1]	$ 0.50	[1]	$ 1.33	[1]	$ 1.17	[1]	$ 0.96	[1]	$ 0.70	[1]	$ 5.29	$ 4.13	$ 3.02
Diluted earnings per common share (US$ per share)			$ 0.87	[1]	$ 0.59	[1]	$ 3.22	[1]	$ 0.49	[1]	$ 1.31	[1]	$ 1.16	[1]	$ 0.94	[1]	$ 0.68	[1]	$ 5.29	$ 4.06	$ 2.96
Dividends declared (US$ per share)	$ 0.34	$ 0.31	$ 0.34	[1]	$ 0.34	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.26	[1]	$ 0.26	[1]	$ 1.30	$ 1.14	$ 0.96
Dividends paid (US$ per share)			$ 0.34	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.31	[1]	$ 0.26	[1]	$ 0.26	[1]	$ 0.26	[1]
Stock Prices [Abstract]
Stock prices - High (US$ per share)			$ 67.87		$ 67.41		$ 67.80		$ 67.11		$ 67.50		$ 60.39		$ 64.69		$ 64.03
Stock prices - Low (US$ per share)			$ 58.50		$ 58.89		$ 62.50		$ 62.72		$ 59.38		$ 54.01		$ 55.50		$ 55.94

[1] Amounts attributable to Motorola Solutions, Inc. common shareholders.