Other Financial Data (Earnings (Loss) Per Common Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	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
Basic earnings per common share:
Basic earnings																	$ (697)	$ 933	$ 670
Net earnings	201	[1]	147	[1]	824	[1]	127	[1]	342	[1]	307	[1]	258	[1]	192	[1]	1,299	1,099	881
Weighted average common shares outstanding, basic (shares)																	245.6	266.0	292.1
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
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:
Basic earnings																	(697)	933	670
Net earnings	$ 201	[1]	$ 147	[1]	$ 824	[1]	$ 127	[1]	$ 342	[1]	$ 307	[1]	$ 258	[1]	$ 192	[1]	$ 1,299	$ 1,099	$ 881
Weighted average common shares outstanding, basic (shares)																	245.6	266.0	292.1
Add effect of dilutive securities:
Add effect of dilutive securities: Share-based awards and other (shares)																	0	4.5	5.3
Diluted weighted average common shares outstanding (shares)																	245.6	270.5	297.4
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
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

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