Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Selected Financial Information Business Segments

The following tables provide selected financial information for People’s United’s reportable segments:

Year ended December 31, 2019 (in millions)	Commercial Banking		Retail Banking		Total Reportable Segments		Treasury		Other		Total Consolidated
Net interest income (loss)	$	807.1	$	555.1	$	1,362.2	$	66.5	$	(16.4)	$	1,412.3
Provision for loan losses	44.1		8.9		53.0		—		(24.7)		28.3
Total non-interest income	206.5		195.9		402.4		14.1		14.6		431.1
Total non-interest expense	448.7		600.2		1,048.9		13.8		100.0		1,162.7
Income (loss) before income tax expense (benefit)	520.8		141.9		662.7		66.8		(77.1)		652.4
Income tax expense (benefit)	104.3		28.5		132.8		13.5		(14.3)		132.0
Net income (loss)	$	416.5	$	113.4	$	529.9	$	53.3	$	(62.8)	$	520.4
Average total assets	$	29,746.8	$	12,560.9	$	42,307.7	$	7,882.3	$	1,468.0	$	51,658.0
Average total liabilities	11,490.2		23,397.7		34,887.9		9,011.9		686.9		44,586.7

Year ended December 31, 2018 (in millions)	Commercial Banking		Retail Banking		Total Reportable Segments		Treasury		Other		Total Consolidated
Net interest income (loss)	$	699.2	$	467.2	$	1,166.4	$	93.0	$	(23.4)	$	1,236.0
Provision for loan losses	38.7		9.0		47.7		—		(17.7)		30.0
Total non-interest income	177.8		186.7		364.5		8.3		(6.4)		366.4
Total non-interest expense	383.7		565.3		949.0		17.8		29.3		996.1
Income (loss) before income tax expense (benefit)	454.6		79.6		534.2		83.5		(41.4)		576.3
Income tax expense (benefit)	85.0		14.9		99.9		15.8		(7.5)		108.2
Net income (loss)	$	369.6	$	64.7	$	434.3	$	67.7	$	(33.9)	$	468.1
Average total assets	$	25,956.7	$	10,103.3	$	36,060.0	$	7,955.8	$	1,013.9	$	45,029.7
Average total liabilities	9,305.0		20,699.1		30,004.1		8,544.3		444.1		38,992.5

Year ended December 31, 2017 (in millions)	Commercial Banking		Retail Banking		Total Reportable Segments		Treasury		Other		Total Consolidated
Net interest income (loss)	$	631.0	$	403.9	$	1,034.9	$	107.4	$	(41.8)	$	1,100.5
Provision for loan losses	43.7		13.4		57.1		—		(31.1)		26.0
Total non-interest income	165.0		183.4		348.4		11.2		(6.7)		352.9
Total non-interest expense	357.1		547.0		904.1		15.6		40.6		960.3
Income (loss) before income tax expense (benefit)	395.2		26.9		422.1		103.0		(58.0)		467.1
Income tax expense (benefit)	110.0		7.5		117.5		28.6		(16.2)		129.9
Net income (loss)	$	285.2	$	19.4	$	304.6	$	74.4	$	(41.8)	$	337.2
Average total assets	$	24,533.9	$	9,695.1	$	34,229.0	$	7,512.1	$	840.5	$	42,581.6
Average total liabilities	7,938.6		20,202.8		28,141.4		8,450.6		398.0		36,990.0