Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements [Abstract]

Nature and Amount of Collateral Received From and Posted To Derivative Counterparty

The table below summarizes the nature and amount of collateral received from and posted to our derivative counterparties.

	June 30, 2018		December 31, 2017
	(in millions of dollars)
Carrying Value of Collateral Received from Counterparties
Cash	$	20.8	$	15.7
Carrying Value of Collateral Posted to Counterparties
Fixed Maturity Securities	$	39.5	$	46.4

Notional Amounts for Each Category of Derivative Activity

The table below summarizes, by notional amounts, the activity for each category of derivatives. The notional amounts represent the basis upon which our counterparty pay and receive amounts are calculated.

	Swaps
	Receive Variable/Pay Fixed		Receive Fixed/Pay Fixed		Receive Fixed/Pay Variable		Credit Default		Forwards		Total
	(in millions of dollars)
Balance at March 31, 2017	$	105.4	$	596.2	$	250.0	$	70.0	$	—	$	1,021.6
Additions	—		—		—		—		16.0		16.0
Terminations	3.4		4.5		—		—		16.0		23.9
Balance at June 30, 2017	$	102.0	$	591.7	$	250.0	$	70.0	$	—	$	1,013.7
Balance at December 31, 2016	$	105.5	$	616.5	$	250.0	$	70.0	$	10.0	$	1,052.0
Additions	—		—		—		—		16.0		16.0
Terminations	3.5		24.8		—		—		26.0		54.3
Balance at June 30, 2017	$	102.0	$	591.7	$	250.0	$	70.0	$	—	$	1,013.7
Balance at March 31, 2018	$	48.0	$	556.4	$	250.0	$	—	$	26.8	$	881.2
Additions	—		6.5		—		—		20.6		27.1
Terminations	48.0		25.5		—		—		26.8		100.3
Balance at June 30, 2018	$	—	$	537.4	$	250.0	$	—	$	20.6	$	808.0
Balance at December 31, 2017	$	48.0	$	536.5	$	250.0	$	70.0	$	—	$	904.5
Additions	—		26.4		—		—		47.4		73.8
Terminations	48.0		25.5		—		70.0		26.8		170.3
Balance at June 30, 2018	$	—	$	537.4	$	250.0	$	—	$	20.6	$	808.0

Fair Value Hedges Carrying Amount of Hedged Assets and Liabilities and Cumulative Basis Adjustments

The following table summarizes the carrying amount of hedged assets and liabilities and the related cumulative basis adjustments related to our fair value hedges.

	Carrying Amount of Hedged Assets (Liabilities)						Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (Liabilities)
	June 30, 2018			December 31, 2017			June 30, 2018			December 31, 2017
	(in millions of dollars)
Fixed maturity securities:
Receive variable interest rate, pay fixed interest rate	$	—		$	48.5		$	—		$	0.6
Receive fixed foreign currency interest, pay fixed foreign currency interest	24.0			—			(1.4		)	—
Long-term Debt	(242.1		)	(244.8		)	7.3			4.5

Location of Gains and Losses on Derivative Instruments Designated as Cash Flow Hedging Instruments

The following table summarizes the location of gains and losses of derivative financial instruments designated as hedging instruments, as reported in our consolidated statements of income.

	Three Months Ended June 30
	2018								2017
	Net Investment Income			Net Realized Investment Gain (Loss)			Interest and Debt Expense		Net Investment Income			Net Realized Investment Gain (Loss)			Interest and Debt Expense
	(in millions of dollars)
Total Income and Expense Presented in the Consolidated Statements of Income of Which Hedged Items are Recorded	$	623.6		$	(2.6	)	$	42.4	$	620.5		$	8.1		$	39.9
Gain (Loss) on Cash Flow Hedging Relationships
Interest Rate Swaps:
Hedged items	76.7			—			11.4		81.0			—			11.4
Derivatives Designated as Hedging Instruments	16.5			(0.2		)	0.5		15.1			—			0.6
Foreign Exchange Contracts
Hedged items	4.7			0.9			—		5.2			0.3			—
Derivatives Designated as Hedging Instruments	(0.2		)	(0.9		)	—		(0.2		)	(0.3		)	—
Gain (Loss) on Fair Value Hedging Relationships
Interest Rate Swaps:
Hedged items	0.3			0.3			3.6		1.5			(2.0		)	3.6
Derivatives Designated as Hedging Instruments	(0.1		)	(0.3		)	0.5		(1.0		)	2.0			(0.2		)
Foreign Exchange Contracts
Hedged items	0.3			(1.1		)	—		—			—			—
Derivatives Designated as Hedging Instruments	0.1			1.1			—		—			—			—

	Six Months Ended June 30
	2018								2017
	Net Investment Income			Net Realized Investment Gain (Loss)			Interest and Debt Expense		Net Investment Income			Net Realized Investment Gain (Loss)			Interest and Debt Expense
	(in millions of dollars)
Total Income and Expense Presented in the Consolidated Statements of Income of Which Hedged Items are Recorded	$	1,225.9		$	(4.8	)	$	82.6	$	1,222.9		$	19.1		$	79.7
Gain (Loss) on Cash Flow Hedging Relationships
Interest Rate Swaps:
Hedged items	154.5			0.1			22.8		162.9			0.2			22.8
Derivatives Designated as Hedging Instruments	32.4			(0.3		)	1.1		29.7			—			1.1
Foreign Exchange Contracts
Hedged items	9.7			0.9			—		10.6			1.5			—
Derivatives Designated as Hedging Instruments	(0.5		)	(0.9		)	—		(0.4		)	(1.5		)	—
Gain (Loss) on Fair Value Hedging Relationships
Interest Rate Swaps:
Hedged items	1.0			2.2			7.2		2.9			(2.6		)	7.2
Derivatives Designated as Hedging Instruments	(0.5		)	(2.2		)	0.6		(2.0		)	2.6			(0.5		)
Foreign Exchange Contracts
Hedged items	0.4			(1.4		)	—		—			—			—
Derivatives Designated as Hedging Instruments	0.1			1.4			—		—			—			—

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income

The following table summarizes the location of gains and losses of derivative financial instruments designated as cash flow hedging instruments, as reported in our consolidated statements of comprehensive income.

		Three Months Ended June 30					Six Months Ended June 30
		2018		2017			2018			2017
		(in millions of dollars)
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives
	Interest Rate Swaps and Forwards	$	0.1	$	—		$	(0.1	)	$	—
	Foreign Exchange Contracts	6.9		(4.7		)	10.7			(9.2		)
Total		$	7.0	$	(4.7	)	$	10.6		$	(9.2	)

Gains and Losses on Derivatives Not Designated as Hedging Instruments

The following table summarizes the location of gains and losses on our derivatives not designated as hedging instruments, as reported in our consolidated statements of income.

		Three Months Ended June 30						Six Months Ended June 30
		2018			2017			2018			2017
		(in millions of dollars)
Net Realized Investment Gain (Loss)
	Credit Default Swaps	$	—		$	(0.1	)	$	—		$	(0.4	)
	Interest Rate Swaps	(0.3		)	(0.1		)	(0.3		)	(0.1		)
	Foreign Exchange Contracts	0.3			(0.2		)	1.0			—
	Embedded Derivative in Modified Coinsurance Arrangement	(2.3		)	6.2			(4.0		)	14.8
Total		$	(2.3	)	$	5.8		$	(3.3	)	$	14.3