Debt and Credit Facilities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended	1 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Mar. 30, 2013 3.500% Senior Notes Due 2023 [Member]	May 31, 2012 3.750% Senior Notes Due 2022 [Member]	Sep. 28, 2013 Revolving Credit Facility [Member] 2011 Motorola Solutions Credit Agreement [Member]	Sep. 28, 2013 Revolving Credit Facility [Member] 2011 Motorola Solutions Credit Agreement [Member]	Jun. 30, 2012 5.375% Senior Notes Due 2012 [Member]	May 31, 2012 5.375% Senior Notes Due 2012 [Member]
Line of Credit Facility [Line Items]
Face principal amount of debt issued					$ 600,000,000	$ 750,000,000
Debt instrument stated interest rate (percent)					3.50%	3.75%				5.375%
Proceeds from issuance of debt					588,000,000	740,000,000
Aggregate principal amount of debt redeemed										400,000,000
Debt redemption aggregate purchase price									408,000,000
Loss from the extinguishment of long-term debt	0	0	0	(6,000,000)					6,000,000
Unsecured syndicated revolving credit facility							1,500,000,000	1,500,000,000
Additional borrowings under line of credit agreement							$ 0	$ 0