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Employee Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 2011
Compensation and Retirement Disclosure [Abstract] 
Net periodic benefit (income) cost
The components of net periodic benefit (income) cost for the plans are as follows:

 
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2011
 
2010
 
2011
 
2010
 
2011
 
2010
 
2011
 
2010
 
 
 
 
 
 
 
 
(millions)
 
 
 
 
 
 
Service cost
 
$
16

 
$
15

 
$
2

 
$
1

 
$
48

 
$
45

 
$
5

 
$
4

Interest cost
 
25

 
25

 
5

 
6

 
74

 
76

 
16

 
17

Expected return on plan assets
 
(60
)
 
(60
)
 
(1
)
 
(1
)
 
(179
)
 
(180
)
 
(2
)
 
(2
)
Amortization of transition obligation
 
—

 
—

 
1

 
1

 
—

 
—

 
2

 
3

Amortization of prior service benefit
 
(1
)
 
(1
)
 
—

 
—

 
(2
)
 
(3
)
 
—

 
—

Net periodic benefit (income) cost at NextEra Energy
 
$
(20
)
 
$
(21
)
 
$
7

 
$
7

 
$
(59
)
 
$
(62
)
 
$
21

 
$
22

Net periodic benefit (income) cost at FPL
 
$
(13
)
 
$
(14
)
 
$
5

 
$
6

 
$
(39
)
 
$
(41
)
 
$
16

 
$
17