Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 881	$ 1,152	$ 650
Other comprehensive income (loss)
Amortization of retirement benefit adjustments, net of tax of $99, $73, and $57	177	132	112
Mid-year remeasurement of retirement benefits and other amendment, net of tax of $52, $9 and $(13)	87	(77)	(6)
Year-end and other retirement adjustments, net of tax of ($419), $332), and $(14)	(707)	(723)	81
Foreign currency translation adjustments, net of tax of $(4), $(8) and $46	14	19	(63)
Net gain (loss) on derivative hedging instruments, net of tax of $(1), $0 and $(1)	4	(3)	(2)
Net unrealized gain (loss) on securities, net of tax of $1, $(1) and $(34)	1	(2)	(58)
Total other comprehensive income (loss)	(424)	(654)	64
Comprehensive income	457	498	714
Less: Earnings (loss) attributable to noncontrolling interest	0	(6)	17
Comprehensive income attributable to Motorola Solutions, Inc. common shareholders	$ 457	$ 504	$ 697