XML 42 R28.htm IDEA: XBRL DOCUMENT v3.10.0.1

Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Reconciliation of operating results by reportable segment

The following tables present the Company's operating results by reportable segment:

	Three Months Ended June 30,
	2018												2017
	Property & Casualty				Other				Total				Property & Casualty				Other				Total
	(Amounts in millions)
Net premiums earned	$	826.2			$	7.8			$	834.0			$	789.0			$	8.7			$	797.7
Less:
Losses and loss adjustment expenses	601.5				4.0				605.5				584.2				4.4				588.6
Underwriting expenses	198.7				3.8				202.5				187.4				4.0				191.4
Underwriting gain	26.0				—				26.0				17.4				0.3				17.7
Investment income									34.8												31.9
Net realized investment gains									14.3												21.2
Other income									2.4												2.1
Interest expense									(4.3		)										(4.2		)
Pre-tax income									$	73.2											$	68.8
Net income									$	60.2											$	51.6

	Six Months Ended June 30,
	2018												2017
	Property & Casualty				Other				Total				Property & Casualty				Other				Total
	(Amounts in millions)
Net premiums earned	$	1,626.4			$	15.6			$	1,642.0			$	1,569.7			$	17.7			$	1,587.4
Less:
Losses and loss adjustment expenses	1,229.9				7.9				1,237.8				1,186.0				9.3				1,195.3
Underwriting expenses	401.2				7.6				408.8				391.0				7.9				398.9
Underwriting (loss) gain	(4.7		)		0.1				(4.6		)		(7.3		)		0.5				(6.8		)
Investment income									66.3												63.1
Net realized investment (losses) gains									(44.4		)										45.6
Other income									4.7												4.2
Interest expense									(8.5		)										(6.7		)
Pre-tax income									$	13.5											$	99.4
Net income									$	17.6											$	78.6

Schedule direct premiums attributable to segment

The following tables present the Company’s net premiums earned and direct premiums written by line of insurance business:

	Three Months Ended June 30,
	2018												2017
	Property & Casualty				Other				Total				Property & Casualty				Other				Total
	(Amounts in millions)
Private passenger automobile	$	645.6			$	—			$	645.6			$	617.3			$	—			$	617.3
Homeowners	112.7				—				112.7				108.3				—				108.3
Commercial automobile	46.7				—				46.7				42.4				—				42.4
Other	21.2				7.8				29.0				21.0				8.7				29.7
Net premiums earned	$	826.2			$	7.8			$	834.0			$	789.0			$	8.7			$	797.7
Private passenger automobile	$	666.0			$	—			$	666.0			$	600.1			$	—			$	600.1
Homeowners	138.0				—				138.0				122.7				—				122.7
Commercial automobile	49.9				—				49.9				45.1				—				45.1
Other	25.5				7.2				32.7				24.2				8.5				32.7
Direct premiums written	$	879.4			$	7.2			$	886.6			$	792.1			$	8.5			$	800.6

	Six Months Ended June 30,
	2018												2017
	Property & Casualty				Other				Total				Property & Casualty				Other				Total
	(Amounts in millions)
Private passenger automobile	$	1,272.5			$	—			$	1,272.5			$	1,230.5			$	—			$	1,230.5
Homeowners	220.5				—				220.5				214.0				—				214.0
Commercial automobile	91.6				—				91.6				83.7				—				83.7
Other	41.8				15.6				57.4				41.5				17.7				59.2
Net premiums earned	$	1,626.4			$	15.6			$	1,642.0			$	1,569.7			$	17.7			$	1,587.4
Private passenger automobile	$	1,340.0			$	—			$	1,340.0			$	1,239.1			$	—			$	1,239.1
Homeowners	253.3				—				253.3				226.5				—				226.5
Commercial automobile	99.6				—				99.6				88.1				—				88.1
Other	49.1				13.6				62.7				47.0				14.2				61.2
Direct premiums written	$	1,742.0			$	13.6			$	1,755.6			$	1,600.7			$	14.2			$	1,614.9

X

- Definition

Disclosure of direct premium written by line of business.

+ References

No definition available.

+ Details

Name:	mcy_ScheduleDirectPremiumsAttributableToSegmentTableTextBlock
Namespace Prefix:	mcy_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8924-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599

+ Details

Name:	us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration