Debt and Credit Facilities	3 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]
Debt and Credit Facilities	Debt and Credit Facilities As of March 31, 2018, the Company had a $2.2 billion syndicated, unsecured revolving credit facility scheduled to mature in April 2022 (the "2017 Motorola Solutions Credit Agreement"), of which $400 million was borrowed as of March 31, 2018 to facilitate the Avigilon acquisition. The 2017 Motorola Solutions Credit Agreement includes a $500 million letter of credit sub-limit with $450 million of fronting commitments. Borrowings under the facility bear interest at the prime rate plus the applicable margin, or at a spread above the London Interbank Offered Rate ("LIBOR"), at the Company's option. The weighted average borrowing rate on outstanding amounts was 3.25%. An annual facility fee is payable on the undrawn amount of the credit line. The interest rate and facility fee are subject to adjustment if the Company's credit rating changes. The Company must comply with certain customary covenants including a maximum leverage ratio, as defined in the 2017 Motorola Solutions Credit Agreement. The Company was in compliance with its financial covenants as of March 31, 2018. To complete the acquisition of Avigilon during the quarter ended March 31, 2018, the Company entered into a term loan for $400 million and a maturity date of March 26, 2021 (the “Term Loan”). Interest on the Term Loan is variable and indexed to LIBOR. Interest is payable quarterly. The weighted average borrowing rate for amounts outstanding during the quarter ended March 31, 2018 was 3.54%. Net proceeds after issuance costs were $399 million. No additional borrowings are permitted and amounts borrowed and repaid or prepaid may not be re-borrowed. In February of 2018, the Company issued $500 million of 4.60% Senior notes due 2028. The Company recognized net proceeds of $497 million after debt issuance costs and debt discounts. These proceeds were then used to make a $500 million contribution to the Company's U.S. pension plan. On August 25, 2015, the Company entered into an agreement with Silver Lake Partners to issue $1.0 billion of 2.00% Senior Convertible Notes which mature in September 2020. The notes became fully convertible as of August 25, 2017. The notes are convertible based on a conversion rate of 14.7476, as may be adjusted for dividends declared, per $1,000 principal amount (which is currently equal to a conversion price of $67.81 per share). The exercise price adjusts automatically for dividends. The value by which the Senior Convertible Notes exceeded their principal amount if converted as of March 31, 2018 was $590 million. In the event of conversion, the Company intends to settle the principal amount of the Senior Convertible Notes in cash.

Debt and Credit Facilities

As of March 31, 2018, the Company had a $2.2 billion syndicated, unsecured revolving credit facility scheduled to mature in April 2022 (the "2017 Motorola Solutions Credit Agreement"), of which $400 million was borrowed as of March 31, 2018 to facilitate the Avigilon acquisition. The 2017 Motorola Solutions Credit Agreement includes a $500 million letter of credit sub-limit with $450 million of fronting commitments. Borrowings under the facility bear interest at the prime rate plus the applicable margin, or at a spread above the London Interbank Offered Rate ("LIBOR"), at the Company's option. The weighted average borrowing rate on outstanding amounts was 3.25%. An annual facility fee is payable on the undrawn amount of the credit line. The interest rate and facility fee are subject to adjustment if the Company's credit rating changes. The Company must comply with certain customary covenants including a maximum leverage ratio, as defined in the 2017 Motorola Solutions Credit Agreement. The Company was in compliance with its financial covenants as of March 31, 2018.

To complete the acquisition of Avigilon during the quarter ended March 31, 2018, the Company entered into a term loan for $400 million and a maturity date of March 26, 2021 (the “Term Loan”). Interest on the Term Loan is variable and indexed to LIBOR. Interest is payable quarterly. The weighted average borrowing rate for amounts outstanding during the quarter ended March 31, 2018 was 3.54%. Net proceeds after issuance costs were $399 million. No additional borrowings are permitted and amounts borrowed and repaid or prepaid may not be re-borrowed.

In February of 2018, the Company issued $500 million of 4.60% Senior notes due 2028. The Company recognized net proceeds of $497 million after debt issuance costs and debt discounts. These proceeds were then used to make a $500 million contribution to the Company's U.S. pension plan.

On August 25, 2015, the Company entered into an agreement with Silver Lake Partners to issue $1.0 billion of 2.00% Senior Convertible Notes which mature in September 2020. The notes became fully convertible as of August 25, 2017. The notes are convertible based on a conversion rate of 14.7476, as may be adjusted for dividends declared, per $1,000 principal amount (which is currently equal to a conversion price of $67.81 per share). The exercise price adjusts automatically for dividends. The value by which the Senior Convertible Notes exceeded their principal amount if converted as of March 31, 2018 was $590 million. In the event of conversion, the Company intends to settle the principal amount of the Senior Convertible Notes in cash.