CME GROUP INC. | 2013 | FY | 3

ACCUMULATED OTHER COMPREHENSIVE INCOME
The following tables present changes in the accumulated balances for each component of other comprehensive income attributable to CME Group, including current period other comprehensive income and reclassifications out of accumulated other comprehensive income:
(in millions)
Investment Securities
 
Defined Benefit Plans
 
Derivative Investments
 
Foreign Currency Translation
 
Total
Balance at December 31, 2012
$
256.7

 
$
(32.4
)
 
$
(16.4
)
 
$
1.4

 
$
209.3

Other comprehensive income before reclassifications and income tax benefit (expense)
(221.0
)
 
28.4

 
128.8

 
(0.8
)
 
(64.6
)
Amounts reclassified from accumulated other comprehensive income
(0.7
)
 
3.2

 
1.6

 
—

 
4.1

Income tax benefit (expense)
63.9

 
(12.0
)
 
(49.0
)
 
0.3

 
3.2

Net current period other comprehensive income attributable to CME Group
(157.8
)
 
19.6

 
81.4

 
(0.5
)
 
(57.3
)
Balance at December 31, 2013
$
98.9

 
$
(12.8
)
 
$
65.0

 
$
0.9

 
$
152.0

(in millions)
Investment Securities
 
Defined Benefit Plans
 
Derivative Investments
 
Foreign Currency Translation
 
Total
Balance at December 31, 2011
$
148.4

 
$
(26.1
)
 
$
(1.2
)
 
$
(9.5
)
 
$
111.6

Other comprehensive income before reclassifications and income tax benefit (expense)
174.7

 
(13.0
)
 
(25.3
)
 
(1.3
)
 
135.1

Amounts reclassified from accumulated other comprehensive income (1)
(1.8
)
 
2.5

 
1.1

 
18.4

 
20.2

Income tax benefit (expense)
(64.6
)
 
4.2

 
9.0

 
(6.2
)
 
(57.6
)
Net current period other comprehensive income attributable to CME Group
108.3

 
(6.3
)
 
(15.2
)
 
10.9

 
97.7

Balance at December 31, 2012
$
256.7

 
$
(32.4
)
 
$
(16.4
)
 
$
1.4

 
$
209.3

(in millions)
Investment Securities
 
Defined Benefit Plans
 
Derivative Investments
 
Foreign Currency Translation
 
Total
Balance at December 31, 2010
$
5.7

 
$
(15.2
)
 
$
(1.8
)
 
$
(92.8
)
 
$
(104.1
)
Other comprehensive income before reclassifications and income tax benefit (expense)
166.4

 
(19.1
)
 
—

 
96.6

 
243.9

Amounts reclassified from accumulated other comprehensive income
—

 
1.7

 
0.9

 
—

 
2.6

Income tax benefit (expense)
(23.7
)
 
6.5

 
(0.3
)
 
(13.3
)
 
(30.8
)
Net current period other comprehensive income attributable to CME Group
142.7

 
(10.9
)
 
0.6

 
83.3

 
215.7

Balance at December 31, 2011
$
148.4

 
$
(26.1
)
 
$
(1.2
)
 
$
(9.5
)
 
$
111.6


(1) In the second quarter of 2012, the company recognized an $18.4 million foreign currency translation loss related to the sale of Credit Market Analysis Ltd. (CMA) within other non-operating income (expense).

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