Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional and Fair Value Amounts of Client-related and Trading Derivative Financial Instruments

The following table shows the notional and fair values of client-related and trading derivative financial instruments. Notional amounts of derivative financial instruments do not represent credit risk, and are not recorded in the consolidated balance sheets. They are used merely to express the volume of this activity. Northern Trust’s credit-related risk of loss is limited to the positive fair value of the derivative instrument, net of any collateral received, which is significantly less than the notional amount.

TABLE 111: NOTIONAL AND FAIR VALUES OF CLIENT-RELATED AND TRADING DERIVATIVE FINANCIAL INSTRUMENTS

	DECEMBER 31, 2016						DECEMBER 31, 2015
			FAIR VALUE						FAIR VALUE
(In Millions)	NOTIONAL VALUE		ASSET		LIABILITY		NOTIONAL VALUE		ASSET		LIABILITY
Foreign Exchange Contracts	$	273,213.1	$	3,274.2	$	3,221.7	$	246,628.5	$	2,541.8	$	2,500.4
Interest Rate Contracts	6,968.3		87.0		85.2		6,209.5		111.1		108.5
Total	$	280,181.4	$	3,361.2	$	3,306.9	$	252,838.0	$	2,652.9	$	2,608.9

Location and Amount of Gains and Losses Recorded in Consolidated Statements of Income

The following table shows the location and amount of gains and losses recorded in the consolidated statements of income for the years ended December 31, 2016, 2015, and 2014.

TABLE 112: LOCATION AND AMOUNT OF CLIENT-RELATED AND TRADING DERIVATIVE GAINS AND LOSSES RECORDED IN INCOME

(In Millions)	LOCATION OF DERIVATIVE GAIN/(LOSS) RECOGNIZED IN INCOME	AMOUNT OF DERIVATIVE GAIN/                   (LOSS) RECOGNIZED IN INCOME DECEMBER 31,
		2016		2015		2014
Foreign Exchange Contracts	Foreign Exchange Trading Income	$	236.6	$	261.8	$	210.1
Interest Rate Contracts	Security Commissions and Trading Income	11.4		17.5		9.3
Total		$	248.0	$	279.3	$	219.4

Types and Classifications of Derivative Instruments

The following table identifies the types and classifications of derivative instruments formally designated as hedges under GAAP and used by Northern Trust to manage risk, their notional and fair values, and the respective risks addressed.

TABLE 113: NOTIONAL AND FAIR VALUES OF DESIGNATED RISK MANAGEMENT DERIVATIVE FINANCIAL INSTRUMENTS

			December 31, 2016						December 31, 2015
					FAIR VALUE						FAIR VALUE
(In Millions)	DERIVATIVE INSTRUMENT	RISK CLASSIFICATION	NOTIONAL VALUE		ASSET		LIABILITY		NOTIONAL VALUE		ASSET		LIABILITY
FAIR VALUE HEDGES
Available for Sale Investment Securities	Interest Rate Swap Contracts	Interest Rate	$	3,873.4	$	88.3	$	16.8	$	3,042.1	$	10.8	$	19.8
Senior Notes and Long-Term Subordinated Debt	Interest Rate Swap Contracts	Interest Rate	1,250.0		71.8		3.3		1,250.0		104.6		2.2
CASH FLOW HEDGES
Forecasted Foreign Currency Denominated Transactions	Foreign Exchange Contracts	Foreign Currency	329.3		8.5		7.8		367.4		8.5		13.8
Foreign Currency Denominated Investment Securities	Foreign Exchange Contracts	Foreign Currency	1,431.6		151.5		0.8		—		—		—
Available for Sale Investment Securities	Interest Rate Contracts	Interest Rate	$	975.0	$	0.1	$	2.7	$	935.0	$	2.0	$	0.7
NET INVESTMENT HEDGES
Net Investments in Non-U.S. Affiliates	Foreign Exchange Contracts	Foreign Currency	2,083.6		174.6		10.8		1,961.5		72.9		1.5
Total			9,942.9		494.8		42.2		7,556.0		198.8		38.0

Gains/Losses of Derivative Financial Instruments

The following table shows the location and amount of derivative gains and losses recorded in the consolidated statements of income related to fair value hedges for the years ended December 31, 2016, 2015, and 2014.

TABLE 114: LOCATION AND AMOUNT OF FAIR VALUE HEDGE DERIVATIVE GAINS AND LOSSES RECORDED IN INCOME

	DERIVATIVE INSTRUMENT	LOCATION OF DERIVATIVE GAIN/(LOSS) RECOGNIZED IN INCOME	AMOUNT OF DERIVATIVE GAIN/        (LOSS) RECOGNIZED IN INCOME           DECEMBER 31,
(In Millions)			2016		2015			2014
Available for Sale Investment Securities	Interest Rate Swap Contracts	Interest Income	$	63.4	$	(21.1	)	$	(36.4	)
Senior Notes and Long-Term Subordinated Debt	Interest Rate Swap Contracts	Interest Expense	5.0		34.7			104.0
Total			$	68.4	$	13.6		$	67.6

Cash Flow Hedge Derivative Gains and Losses Recognized in AOCI and the Amounts Reclassified to Earnings

The following table provides cash flow hedge derivative gains and losses that were recognized in AOCI and the amounts reclassified to earnings during the years ended December 31, 2016, 2015 and 2014.

TABLE 115: CASH FLOW HEDGE DERIVATIVE GAINS AND LOSSES RECOGNIZED IN AOCI AND RECLASSIFIED TO INCOME

	FOREIGN EXCHANGE           CONTRACTS           (BEFORE TAX)									INTEREST RATE           CONTRACTS           (BEFORE TAX)
(In Millions)	2016			2015			2014			2016			2015		2014
Net Gain/(Loss) Recognized in AOCI	$	7.9		$	(1.2	)	$	(9.4	)	$	(3.4	)	$	—	$	0.7
Net Gain/(Loss) Reclassified from AOCI to Earnings
Other Operating Income	(6.4		)	(8.0		)	3.3			—			—		—
Interest Income	6.4			—			—			2.8			5.2		1.2
Other Operating Expense	(0.9		)	(1.9		)	(0.5		)	—			—		—
Total	$	(0.9	)	$	(9.9	)	$	2.8		$	2.8		$	5.2	$	1.2

Net Investment Hedge Gains and Losses Recognized in AOCI

The following table provides net investment hedge gains and losses recognized in AOCI during the years ended December 31, 2016 and 2015.

TABLE 116: NET INVESTMENT HEDGE GAINS AND LOSSES RECOGNIZED IN AOCI

	AMOUNT OF HEDGING INSTRUMENT GAIN/(LOSS) RECOGNIZED IN AOCI (BEFORE TAX)
(In Millions)	2016		2015
Foreign Exchange Contracts	$	212.4	$	143.6
Sterling Denominated Subordinated Debt	—		5.0
Total	$	212.4	$	148.6

Types of Risk Management Derivative Instruments Not Formally Designated as Hedges, Including Notional Amounts and Fair Values

The following table identifies the types of risk management derivative instruments not formally designated as hedges and their notional amounts and fair values.

TABLE 117: NOTIONAL AND FAIR VALUES OF NON-DESIGNATED RISK MANAGEMENT DERIVATIVE INSTRUMENTS

	DECEMBER 31, 2016						DECEMBER 31, 2015
			FAIR VALUE						FAIR VALUE
(In Millions)	NOTIONAL VALUE		ASSET		LIABILITY		NOTIONAL VALUE		ASSET		LIABILITY
Foreign Exchange Contracts	$	289.6	$	0.8	$	1.8	$	244.6	$	0.2	$	3.7
Other Financial Derivatives (1)	$	270.0	$	—	$	25.2	$	152.8	$	—	$	10.9
Total	$	559.6	$	0.8	$	27.0	$	397.4	$	0.2	$	14.6

(1) This line consists of swaps related to the sale of certain Visa Class B common shares and total return swap contracts.

Gains/Losses of Derivative Financial Instruments

The following table provides the location and amount of gains and losses recorded in the consolidated statements of income for the years ended December 31, 2016, 2015, and 2014 for derivative instruments not formally designated as hedges under GAAP.

TABLE 118: LOCATION AND AMOUNT OF GAINS AND LOSSES RECORDED IN INCOME FOR NON-DESIGNATED RISK MANAGEMENT DERIVATIVE INSTRUMENTS

	LOCATION OF DERIVATIVE GAIN/ (LOSS) RECOGNIZED IN INCOME	AMOUNT RECOGNIZED IN INCOME
(In Millions)		2016			2015			2014
Foreign Exchange Contracts	Other Operating Income	(6.7		)	(10.9		)	(14.3		)
Other Financial Derivatives (1)	Other Operating Income	(6.1		)	(1.0		)	—
Total		$	(12.8	)	$	(11.9	)	$	(14.3	)

(1) This line includes the statement of income impact of swaps related to the sale of certain Visa Class B common shares, total return swap contracts, and credit default swap contracts.