Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2023

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor

The table below provides additional detail regarding residential real estate loans by geographic region.

TABLE 75: RESIDENTIAL REAL ESTATE LOANS BY GEOGRAPHIC REGION

	DECEMBER 31,
(In Millions)	2023		2022
Residential Real Estate by geographic region:
Florida	$	1,648.1	$	1,603.2
California	1,463.8		1,508.1
Illinois	640.3		686.9
New York	505.4		498.7
Colorado	344.1		364.2
Texas	318.7		312.4
All other(1)	1,406.7		1,440.0
Total Residential Real Estate	$	6,327.1	$	6,413.5

(1) The remainder is distributed throughout the other geographic regions within the U.S. served by Northern Trust.

Commercial Real Estate Loan Types

The table below provides additional detail regarding commercial real estate loan types.

TABLE 76: COMMERCIAL REAL ESTATE LOANS

	DECEMBER 31,
(In Millions)	2023		2022
Commercial Mortgages
Office	$	1,035.1	$	1,054.0
Apartment/ Multi-family	1,633.9		1,392.7
Retail	620.9		572.2
Industrial/ Warehouse	687.1		596.2
Other	575.3		548.0
Total Commercial Mortgages	4,552.3		4,163.1
Construction, Acquisition and Development Loans	581.9		609.9
Total Commercial Real Estate Loans	$	5,134.2	$	4,773.0