Securities (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Trading Securities and Other Trading Assets [Line Items]

Reconciliation of Amortized Cost to Fair Value of Securities Available for Sale

The following tables provide the amortized cost and fair values of securities at September 30, 2016 and December 31, 2015.

Table 36: Reconciliation of Amortized Cost to Fair Value of Securities Available for Sale

Securities Available for Sale	September 30, 2016
	Amortized Cost		Gross Unrealized				Fair Value
(In Millions)			Gains		Losses
U.S. Government	$	7,610.1	$	54.7	$	0.9	$	7,663.9
Obligations of States and Political Subdivisions	776.4		0.5		2.1		774.8
Government Sponsored Agency	17,978.4		68.9		22.9		18,024.4
Non-U.S. Government	419.9		0.2		—		420.1
Corporate Debt	3,912.6		8.7		12.9		3,908.4
Covered Bonds	1,243.4		2.1		1.0		1,244.5
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	1,169.6		2.1		1.7		1,170.0
Other Asset-Backed	2,248.9		5.4		0.2		2,254.1
Auction Rate	6.1		—		0.3		5.8
Commercial Mortgage-Backed	447.5		1.3		0.1		448.7
Other	58.9		—		—		58.9
Total	$	35,871.8	$	143.9	$	42.1	$	35,973.6

Securities Available for Sale	December 31, 2015
	Amortized Cost		Gross Unrealized				Fair Value
(In Millions)			Gains		Losses
U.S. Government	$	6,180.4	$	3.4	$	5.5	$	6,178.3
Obligations of States and Political Subdivisions	36.4		0.1		0.1		36.4
Government Sponsored Agency	16,370.5		42.8		46.5		16,366.8
Non-U.S. Government	309.5		0.1		0.1		309.5
Corporate Debt	3,744.4		0.9		33.1		3,712.2
Covered Bonds	1,873.3		1.8		4.9		1,870.2
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	860.9		0.5		2.0		859.4
Other Asset-Backed	2,504.2		0.1		4.2		2,500.1
Auction Rate	16.7		0.5		0.1		17.1
Commercial Mortgage-Backed	378.1		—		3.7		374.4
Other	93.4		0.1		—		93.5
Total	$	32,367.8	$	50.3	$	100.2	$	32,317.9

Reconciliation of Amortized Cost to Fair Values of Securities Held to Maturity

Table 37: Reconciliation of Amortized Cost to Fair Value of Securities Held to Maturity

Securities Held to Maturity	September 30, 2016
	Amortized Cost		Gross Unrealized				Fair Value
(In Millions)			Gains		Losses
U.S Government	$	8.0	$	—	$	—	$	8.0
Obligations of States and Political Subdivisions	76.6		3.7		—		80.3
Government Sponsored Agency	8.1		0.6		—		8.7
Corporate Debt	149.3		0.4		—		149.7
Covered Bonds	1,860.7		16.9		1.1		1,876.5
Non-U.S. Government	3,468.4		13.5		0.1		3,481.8
Certificates of Deposit	750.4		0.1		0.1		750.4
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	2,282.9		13.8		0.2		2,296.5
Other	111.6		0.1		30.5		81.2
Total	$	8,716.0	$	49.1	$	32.0	$	8,733.1

Securities Held to Maturity	December 31, 2015
	Amortized Cost		Gross Unrealized				Fair Value
(In Millions)			Gains		Losses
U.S Government	$	26.0	$	—	$	—	$	26.0
Obligations of States and Political Subdivisions	89.2		5.2		—		94.4
Government Sponsored Agency	9.9		0.7		—		10.6
Covered Bonds	892.4		0.4		1.9		890.9
Non-U.S. Government	1,118.0		4.8		0.5		1,122.3
Certificates of Deposit	691.6		0.1		0.1		691.6
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	2,326.2		8.3		0.9		2,333.6
Other	95.0		—		36.9		58.1
Total	$	5,248.3	$	19.5	$	40.3	$	5,227.5

Securities Continuous Unrealized Loss Position

The following tables provide information regarding securities that had been in a continuous unrealized loss position for less than twelve months and for twelve months or longer as of September 30, 2016 and December 31, 2015.

Table 39: Securities with Unrealized Losses

Securities with Unrealized Losses as of September 30, 2016	Less than 12 Months				12 Months or Longer				Total
(In Millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government	$	1,101.6	$	0.9	$	—	$	—	$	1,101.6	$	0.9
Obligations of States and Political Subdivisions	631.8		2.1		—		—		631.8		2.1
Government Sponsored Agency	4,437.8		12.8		2,615.3		10.1		7,053.1		22.9
Non-U.S. Government	1,102.2		0.1		—		—		1,102.2		0.1
Corporate Debt	755.2		1.5		1,118.8		11.4		1,874.0		12.9
Covered Bonds	280.4		1.0		331.5		1.1		611.9		2.1
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	570.3		0.8		248.9		1.1		819.2		1.9
Other Asset-Backed	—		—		93.2		0.2		93.2		0.2
Certificates of Deposit	345.8		0.1		—		—		345.8		0.1
Auction Rate	—		—		5.3		0.3		5.3		0.3
Commercial Mortgage-Backed	30.8		0.1		—		—		30.8		0.1
Other	24.1		7.4		71.3		23.1		95.4		30.5
Total	$	9,280.0	$	26.8	$	4,484.3	$	47.3	$	13,764.3	$	74.1

Securities with Unrealized Losses as of December 31, 2015	Less than 12 Months				12 Months or Longer				Total
(In Millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Government	$	3,888.0	$	5.5	$	—	$	—	$	3,888.0	$	5.5
Obligations of States and Political Subdivisions	15.1		0.1		—		—		15.1		0.1
Government Sponsored Agency	9,208.5		38.7		1,213.6		7.8		10,422.1		46.5
Non-U.S. Government	314.3		0.6		—		—		314.3		0.6
Corporate Debt	2,067.6		10.3		1,057.1		22.8		3,124.7		33.1
Covered Bonds	1,598.4		6.7		10.0		0.1		1,608.4		6.8
Sub-Sovereign, Supranational and Non-U.S. Agency Bonds	1,132.9		2.3		109.3		0.6		1,242.2		2.9
Other Asset-Backed	2,122.7		4.0		170.6		0.2		2,293.3		4.2
Certificates of Deposit	180.3		0.1		—		—		180.3		0.1
Auction Rate	—		—		6.4		0.1		6.4		0.1
Commercial Mortgage-Backed	374.4		3.7		—		—		374.4		3.7
Other	28.7		13.3		50.7		23.6		79.4		36.9
Total	$	20,930.9	$	85.3	$	2,617.7	$	55.2	$	23,548.6	$	140.5

Credit Related Impairment Losses Recognized in Earnings on Other Than Temporarily Impaired Securities

The table below provides the cumulative credit-related losses recognized in earnings on debt securities other-than-temporarily impaired.

Table 40: Cumulative Credit-Related Losses on Securities

	Three Months Ended September 30,				Nine Months Ended September 30,
(In Millions)	2016		2015		2016		2015
Cumulative Credit-Related Losses on Securities Held — Beginning of Period	$	7.6	$	5.2	$	5.2	$	5.2
Plus: Losses on Newly Identified Impairments	—		—		0.3		—
Additional Losses on Previously Identified Impairments	—		—		2.1		—
Less: Current and Prior Period Losses on Securities Sold During the Period	—		—		—		—
Cumulative Credit-Related Losses on Securities Held — End of Period	$	7.6	$	5.2	$	7.6	$	5.2

Securities Available for Sale

Schedule of Trading Securities and Other Trading Assets [Line Items]

Remaining Maturity of Securities

The following table provides the remaining maturity of securities as of September 30, 2016.

Table 38: Remaining Maturity of Securities Available for Sale and Held to Maturity

	September 30, 2016
(In Millions)	Amortized Cost		Fair Value
Available for Sale
Due in One Year or Less	$	9,294.5	$	9,313.6
Due After One Year Through Five Years	20,249.7		20,328.0
Due After Five Years Through Ten Years	5,450.1		5,456.2
Due After Ten Years	877.5		875.8
Total	35,871.8		35,973.6
Held to Maturity
Due in One Year or Less	3,722.5		3,727.8
Due After One Year Through Five Years	4,863.2		4,901.5
Due After Five Years Through Ten Years	71.8		69.7
Due After Ten Years	58.5		34.1
Total	$	8,716.0	$	8,733.1

Note: Mortgage-backed and asset-backed securities are included in the above table taking into account anticipated future prepayments.

Held-to-maturity Securities

Schedule of Trading Securities and Other Trading Assets [Line Items]

Remaining Maturity of Securities

The following table provides the remaining maturity of securities as of September 30, 2016.

Table 38: Remaining Maturity of Securities Available for Sale and Held to Maturity

	September 30, 2016
(In Millions)	Amortized Cost		Fair Value
Available for Sale
Due in One Year or Less	$	9,294.5	$	9,313.6
Due After One Year Through Five Years	20,249.7		20,328.0
Due After Five Years Through Ten Years	5,450.1		5,456.2
Due After Ten Years	877.5		875.8
Total	35,871.8		35,973.6
Held to Maturity
Due in One Year or Less	3,722.5		3,727.8
Due After One Year Through Five Years	4,863.2		4,901.5
Due After Five Years Through Ten Years	71.8		69.7
Due After Ten Years	58.5		34.1
Total	$	8,716.0	$	8,733.1

Note: Mortgage-backed and asset-backed securities are included in the above table taking into account anticipated future prepayments.