Other Financial Data (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	0 Months Ended			3 Months Ended																12 Months Ended			41 Months Ended
	Nov. 04, 2014	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	Dec. 31, 2014	Nov. 04, 2014
Other Financial Data [Line Items]
Net book value				$ 549,000,000								$ 610,000,000								$ 549,000,000	$ 610,000,000		$ 549,000,000
Proceeds from sales of property, plant and equipment																				33,000,000	66,000,000	40,000,000
Gain on sale of building and land																				21,000,000	0	0
(Gain) Loss related to the settlement of a legal matter																				8,000,000	0	(16,000,000)
Investment impairment charges																				0	3,000,000	4,000,000
Zebra receivable for cash transferred				49,000,000								0								49,000,000	0		49,000,000
Depreciation expense																				169,000,000	157,000,000	150,000,000
Stockholders' Equity Note [Abstract]
Payments for Repurchase of Common Stock																				2,546,000,000	1,694,000,000	2,438,000,000
Stock Repurchased and Retired During Period, Shares																				39.4	28.6	49.6
Repurchase of common shares, average cost per share																				$ 64.63	$ 59.30	$ 49.14
Stock Repurchased and Retired During Period, Value																						2,400,000,000
Stock Repurchase Program, Additional Authorized Amount	5,000,000,000
Share repurchase program, maximum amount	12,000,000,000																							12,000,000,000
Share repurchase authority utilized during period																							7,800,000,000
Share repurchase program, available for repurchases				4,200,000,000																4,200,000,000			4,200,000,000
Dividends declared per share (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
Payments of cash dividends to holders of common stock																				318,000,000	292,000,000	270,000,000
Stock Options
Other Financial Data [Line Items]
Stock options excluded from computation of dilutive shares due to antidilutive nature																				6.3	5.6	5.9
Restricted Stock
Other Financial Data [Line Items]
Stock options excluded from computation of dilutive shares due to antidilutive nature																				1.1
Schaumburg, Illinois
Other Financial Data [Line Items]
Net book value				3,000,000																3,000,000			3,000,000
Proceeds from sales of property, plant and equipment																				24,000,000
Gain on sale of building and land																				$ (21,000,000)

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