Total Restructuring Charges Included in Costs and Expenses (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Total charges	$ 576
Research and Development Expense
Restructuring Cost and Reserve [Line Items]
Total charges	200
Sales and Marketing Expense
Restructuring Cost and Reserve [Line Items]
Total charges	131
General and Administrative Expense
Restructuring Cost and Reserve [Line Items]
Total charges	116
Motorola Mobile | Cost of Revenues
Restructuring Cost and Reserve [Line Items]
Total charges	129
Cash Severance and Related Cash Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Total charges	520
Cash Severance and Related Cash Restructuring Costs | Research and Development Expense
Restructuring Cost and Reserve [Line Items]
Total charges	195
Cash Severance and Related Cash Restructuring Costs | Sales and Marketing Expense
Restructuring Cost and Reserve [Line Items]
Total charges	123
Cash Severance and Related Cash Restructuring Costs | General and Administrative Expense
Restructuring Cost and Reserve [Line Items]
Total charges	114
Cash Severance and Related Cash Restructuring Costs | Motorola Mobile | Cost of Revenues
Restructuring Cost and Reserve [Line Items]
Total charges	88
Other Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Total charges	56
Other Restructuring Charges | Research and Development Expense
Restructuring Cost and Reserve [Line Items]
Total charges	5
Other Restructuring Charges | Sales and Marketing Expense
Restructuring Cost and Reserve [Line Items]
Total charges	8
Other Restructuring Charges | General and Administrative Expense
Restructuring Cost and Reserve [Line Items]
Total charges	2
Other Restructuring Charges | Motorola Mobile | Cost of Revenues
Restructuring Cost and Reserve [Line Items]
Total charges	$ 41