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Employee Retirement Benefits
 9 Months Ended
Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract]  
Employee Retirement Benefits
1.  Employee Retirement Benefits

NEE sponsors a qualified noncontributory defined benefit pension plan for substantially all employees of NEE and its subsidiaries and has a supplemental executive retirement plan, which includes a non-qualified supplemental defined benefit pension component that provides benefits to a select group of management and highly compensated employees (collectively, pension benefits).  In addition to pension benefits, NEE sponsors a contributory postretirement plan for health care and life insurance benefits (other benefits) for retirees of NEE and its subsidiaries meeting certain eligibility requirements.

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,
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
 
 
 (millions)
Service cost
 
$
16

 
$
16

 
$
1

 
$
2

 
$
49

 
$
48

 
$
4

 
$
5

Interest cost
 
25

 
25

 
4

 
5

 
74

 
74

 
13

 
16

Expected return on plan assets
 
(60
)
 
(60
)
 
—

 
(1
)
 
(179
)
 
(179
)
 
(1
)
 
(2
)
Amortization of transition obligation
 
—

 
—

 
—

 
1

 
—

 
—

 
1

 
2

Amortization of prior service cost (benefit)
 
1

 
(1
)
 
(1
)
 
—

 
3

 
(2
)
 
—

 
—

Net periodic benefit (income) cost at NEE
 
$
(18
)
 
$
(20
)
 
$
4

 
$
7

 
$
(53
)
 
$
(59
)
 
$
17

 
$
21

Net periodic benefit (income) cost at FPL
 
$
(11
)
 
$
(13
)
 
$
3

 
$
5

 
$
(34
)
 
$
(39
)
 
$
13

 
$
16