Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Valuation Techniques, Significant Unobservable Inputs, and Quantitative Information

The following table presents the fair values of Northern Trust’s Level 3 liabilities as of December 31, 2022 and 2021, as well as the valuation techniques, significant unobservable inputs, and quantitative information used to develop significant unobservable inputs for such liabilities as of such dates.

TABLE 52: LEVEL 3 SIGNIFICANT UNOBSERVABLE INPUTS

	DECEMBER 31, 2022
FINANCIAL INSTRUMENT	FAIR VALUE	VALUATION TECHNIQUE	UNOBSERVABLE INPUTS	INPUT VALUES			WEIGHTED-AVERAGE INPUT VALUES(1)
Swaps Related to Sale of Certain Visa Class B Common Shares	$34.8 million	Discounted Cash Flow	Conversion Rate	1.60x			1.60x
			Visa Class A Appreciation	8.53%			8.53%
			Expected Duration	12	-	33 months	20 months

(1) Weighted average of expected duration based on scenario probability.

	DECEMBER 31, 2021
FINANCIAL INSTRUMENT	FAIR VALUE	VALUATION TECHNIQUE	UNOBSERVABLE INPUTS	INPUT VALUES			WEIGHTED-AVERAGE INPUT VALUES(1)
Swaps Related to Sale of Certain Visa Class B Common Shares	$37.5 million	Discounted Cash Flow	Conversion Rate	1.62x			1.62x
			Visa Class A Appreciation	10.10%			10.10%
			Expected Duration	12	-	33 months	20 months

(1) Weighted average of expected duration based on scenario probability.

The following table presents the fair values of Northern Trust’s Level 3 assets that were measured at fair value on a nonrecurring basis as of December 31, 2022 and 2021, as well as the valuation technique, significant unobservable inputs, and quantitative information used to develop the significant unobservable inputs for such assets as of such dates.

TABLE 55: LEVEL 3 NONRECURRING BASIS SIGNIFICANT UNOBSERVABLE INPUTS

	DECEMBER 31, 2022
FINANCIAL INSTRUMENT	FAIR VALUE(1)	VALUATION  TECHNIQUE	UNOBSERVABLE INPUTS	INPUT VALUES			WEIGHTED-AVERAGE INPUT VALUES
Loans	$6.6 million	Market Approach	Discount factor applied to real estate collateral-dependent loans to reflect realizable value	15.0%	–	20.0%	17.2%

(1) Includes real estate collateral-dependent loans and other collateral-dependent loans.

	DECEMBER 31, 2021
FINANCIAL INSTRUMENT	FAIR VALUE(1)	VALUATION  TECHNIQUE	UNOBSERVABLE INPUTS	INPUT VALUES			WEIGHTED-AVERAGE INPUT VALUES
Loans	$15.0 million	Market Approach	Discount factor applied to real estate collateral-dependent loans to reflect realizable value	15.0%	–	20.0%	15.4%

(1) Includes real estate collateral-dependent loans and other collateral-dependent loans.

Assets and Liabilities Measured at Fair Value on Recurring Basis Segregated by Fair Value Hierarchy Level

The following presents assets and liabilities measured at fair value on a recurring basis as of December 31, 2022 and 2021, segregated by fair value hierarchy level.

TABLE 53: RECURRING BASIS HIERARCHY LEVELING

	DECEMBER 31, 2022
(In Millions)	LEVEL 1		LEVEL 2		LEVEL 3		NETTING		ASSETS/ LIABILITIES AT FAIR VALUE
Debt Securities
Available for Sale
U.S. Government	$	2,747.4	$	—	$	—	$	—	$	2,747.4
Obligations of States and Political Subdivisions	—		787.6		—		—		787.6
Government Sponsored Agency	—		11,545.2		—		—		11,545.2
Non-U.S. Government	—		360.0		—		—		360.0
Corporate Debt	—		1,747.6		—		—		1,747.6
Covered Bonds	—		388.7		—		—		388.7
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	—		2,479.4		—		—		2,479.4
Other Asset-Backed	—		5,256.2		—		—		5,256.2
Commercial Mortgage-Backed	—		1,387.8		—		—		1,387.8
Total Available for Sale	2,747.4		23,952.5		—		—		26,699.9
Trading Account	95.0		0.2		—		—		95.2
Total Available for Sale and Trading Debt Securities	2,842.4		23,952.7		—		—		26,795.1
Other Assets
Derivative Assets
Foreign Exchange Contracts	—		3,510.1		—		(2,666.4)		843.7
Interest Rate Contracts	—		222.0		—		(144.3)		77.7
Other Financial Derivatives(1)	—		0.3		—		—		0.3
Total Derivative Assets	—		3,732.4		—		(2,810.7)		921.7
Other Liabilities
Derivative Liabilities
Foreign Exchange Contracts	—		3,187.5		—		(1,826.7)		1,360.8
Interest Rate Contracts	—		431.8		—		(5.9)		425.9
Other Financial Derivatives(2)	—		—		34.8		(33.3)		1.5
Total Derivative Liabilities	$	—	$	3,619.3	$	34.8	$	(1,865.9)	$	1,788.2

Note: Northern Trust has elected to net derivative assets and liabilities when legally enforceable master netting arrangements or similar agreements exist between Northern Trust and the counterparty. As of December 31, 2022, derivative assets and liabilities shown above also include reductions of $1,140.2 million and $195.3 million, respectively, as a result of cash collateral received from and deposited with derivative counterparties.

(1) This line consists of total return swap contracts.

(2) This line consists of swaps related to the sale of certain Visa Class B common shares.

	DECEMBER 31, 2021
(In Millions)	LEVEL 1		LEVEL 2		LEVEL 3		NETTING		ASSETS/ LIABILITIES AT FAIR VALUE
Debt Securities
Available for Sale
U.S. Government	$	2,426.1	$	—	$	—	$	—	$	2,426.1
Obligations of States and Political Subdivisions	—		3,876.1		—		—		3,876.1
Government Sponsored Agency	—		18,075.6		—		—		18,075.6
Non-U.S. Government	—		374.0		—		—		374.0
Corporate Debt	—		2,341.7		—		—		2,341.7
Covered Bonds	—		505.6		—		—		505.6
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	—		3,045.1		—		—		3,045.1
Other Asset-Backed	—		5,941.6		—		—		5,941.6
Commercial Mortgage Backed	—		1,424.7		—		—		1,424.7
Total Available for Sale	2,426.1		35,584.4		—		—		38,010.5
Trading Account	—		0.3		—		—		0.3
Total Available for Sale and Trading Debt Securities	2,426.1		35,584.7		—		—		38,010.8
Other Assets
Derivative Assets
Foreign Exchange Contracts	—		2,207.4		—		(1,530.7)		676.7
Interest Rate Contracts	—		140.0		—		(3.1)		136.9
Total Derivatives Assets	—		2,347.4		—		(1,533.8)		813.6
Other Liabilities
Derivative Liabilities
Foreign Exchange Contracts	—		1,998.8		—		(1,234.5)		764.3
Interest Rate Contracts	—		98.9		—		(48.1)		50.8
Other Financial Derivative(1)	—		—		37.5		(0.9)		36.6
Total Derivative Liabilities	$	—	$	2,097.7	$	37.5	$	(1,283.5)	$	851.7

Note: Northern Trust has elected to net derivative assets and liabilities when legally enforceable master netting arrangements or similar agreements exist between Northern Trust and the counterparty. As of December 31, 2021, derivative assets and liabilities shown above also include reductions of $389.4 million and $139.0 million, respectively, as a result of cash collateral received from and deposited with derivative counterparties.

(1) This line consists of swaps related to the sale of certain Visa Class B common shares.

Changes in Level 3 Liabilities

The following table presents the changes in Level 3 liabilities for the years ended December 31, 2022 and 2021.

TABLE 54: CHANGES IN LEVEL 3 LIABILITIES

LEVEL 3 LIABILITIES	SWAPS RELATED TO SALE OF CERTAIN VISA CLASS B COMMON SHARES
(In Millions)	2022		2021
Fair Value at January 1	$	37.5	$	35.3
Total (Gains) Losses:
Included in Earnings(1)	22.6		21.3
Purchases, Issues, Sales, and Settlements
Settlements	(25.3)		(19.1)
Fair Value at December 31	$	34.8	$	37.5
Unrealized Losses (Gains) Included in Earnings Related to Financial Instruments Held at December 31(1)	$	16.6	$	22.0

(1) Gains (losses) are recorded in Other Operating Income on the consolidated statements of income.

Book and Fair Values of All Financial Instruments

The following tables presents the book value and estimated fair value, including the fair value hierarchy level, of Northern Trust’s financial instruments that are not measured at fair value on the consolidated balance sheets as of December 31, 2022 and 2021. The following tables exclude those items measured at fair value on a recurring basis.

TABLE 56: FAIR VALUE OF FINANCIAL INSTRUMENTS

	DECEMBER 31, 2022
					ESTIMATED FAIR VALUE
(In Millions)	BOOK VALUE		TOTAL ESTIMATED FAIR VALUE		LEVEL 1		LEVEL 2		LEVEL 3
FINANCIAL ASSETS
Cash and Due from Banks	$	4,654.2	$	4,654.2	$	4,654.2	$	—	$	—
Federal Reserve and Other Central Bank Deposits	40,030.4		40,030.4		—		40,030.4		—
Interest-Bearing Deposits with Banks	1,941.1		1,941.1		—		1,941.1		—
Federal Funds Sold	32.0		32.0		—		32.0		—
Securities Purchased under Agreements to Resell	1,070.3		1,070.3		—		1,070.3		—
Debt Securities - Held to Maturity	25,036.1		22,879.3		50.0		22,829.3		—
Loans (excluding Leases)
Held for Investment	42,749.0		42,636.5		—		—		42,636.5
Other Assets	1,476.9		1,460.4		94.7		1,365.7		—
FINANCIAL LIABILITIES
Deposits
Demand, Noninterest-Bearing, Savings, Money Market and Other Interest-Bearing	$	56,468.9	$	56,468.9	$	56,468.9	$	—	$	—
Savings Certificates and Other Time	1,981.3		1,976.1		—		1,976.1		—
Non U.S. Offices Interest-Bearing	65,481.9		65,481.9		—		65,481.9		—
Federal Funds Purchased	1,896.9		1,896.9		—		1,896.9		—
Securities Sold Under Agreements to Repurchase	567.2		567.2		—		567.2		—
Other Borrowings	7,592.3		7,592.8		—		7,592.8		—
Senior Notes	2,724.2		2,729.8		—		2,729.8		—
Long-Term Debt	2,066.2		2,110.7		—		2,110.7		—
Unfunded Commitments	218.9		218.9		—		218.9		—
Other Liabilities	73.2		73.2		—		—		73.2

	DECEMBER 31, 2021
					ESTIMATED FAIR VALUE
(In Millions)	BOOK VALUE		TOTAL ESTIMATED FAIR VALUE		LEVEL 1		LEVEL 2		LEVEL 3
FINANCIAL ASSETS
Cash and Due from Banks	$	3,056.8	$	3,056.8	$	3,056.8	$	—	$	—
Federal Reserve and Other Central Bank Deposits	64,582.2		64,582.2		—		64,582.2		—
Interest-Bearing Deposits with Banks	1,949.4		1,949.4		—		1,949.4		—
Securities Purchased under Agreements to Resell	686.4		686.4		—		686.4		—
Debt Securities - Held to Maturity	23,564.5		23,315.4		47.0		23,268.4		—
Loans (excluding Leases)
Held for Investment	40,319.3		40,208.2		—		—		40,208.2
Held for Sale	12.3		24.5		—		24.5		—
Other Assets	1,275.3		1,279.8		119.1		1,160.7		—
FINANCIAL LIABILITIES
Deposits
Demand, Noninterest-Bearing, Savings, Money Market and Other Interest-Bearing	$	83,318.6	$	83,318.6	$	83,318.6	$	—	$	—
Savings Certificates and Other Time	842.7		843.8		—		843.8		—
Non U.S. Offices Interest-Bearing	75,767.1		75,767.1		—		75,767.1		—
Federal Funds Purchased	0.2		0.2		—		0.2		—
Securities Sold Under Agreements to Repurchase	531.9		531.9		—		531.9		—
Other Borrowings	3,583.8		3,583.9		—		3,583.9		—
Senior Notes	2,505.5		2,591.4		—		2,591.4		—
Long-Term Debt	1,145.7		1,189.4		—		1,189.4		—
Unfunded Commitments	289.3		289.3		—		289.3		—
Other Liabilities	75.5		75.5		—		—		75.5