|
Retirement Benefits (Tables)
|
9 Months Ended |
|
Sep. 30, 2012
|
| Schedule Of Net Benefit Costs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
In Millions
|
|
|
Pension
|
|
|
Three Months Ended
|
|
Nine Months Ended
|
|
September 30
|
2012
|
2011
|
|
2012
|
2011
|
|
CMS Energy, including Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic pension cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
12
|
|
$
|
12
|
|
|
$
|
36
|
|
$
|
36
|
|
Interest expense
|
|
|
24
|
|
|
25
|
|
|
|
74
|
|
|
75
|
|
Expected return on plan assets
|
|
|
(31)
|
|
|
(28)
|
|
|
|
(94)
|
|
|
(84)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
19
|
|
|
16
|
|
|
|
57
|
|
|
47
|
|
Prior service cost
|
|
|
1
|
|
|
1
|
|
|
|
4
|
|
|
4
|
|
Net periodic pension cost
|
|
$
|
25
|
|
$
|
26
|
|
|
$
|
77
|
|
$
|
78
|
|
Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic pension cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
12
|
|
$
|
12
|
|
|
$
|
35
|
|
$
|
35
|
|
Interest expense
|
|
|
24
|
|
|
24
|
|
|
|
72
|
|
|
73
|
|
Expected return on plan assets
|
|
|
(30)
|
|
|
(27)
|
|
|
|
(91)
|
|
|
(82)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
18
|
|
|
15
|
|
|
|
55
|
|
|
46
|
|
Prior service cost
|
|
|
1
|
|
|
1
|
|
|
|
4
|
|
|
4
|
|
Net periodic pension cost
|
|
$
|
25
|
|
$
|
25
|
|
|
$
|
75
|
|
$
|
76
|
CMS Energy’s and Consumers’ expected long-term rate of return on Pension Plan assets is 7.75 percent. For the twelve months ended September 30, 2012, the actual return on Pension Plan assets was 18.6 percent, and for the twelve months ended September 30, 2011, the actual return was 2.0 percent. The expected rate of return is an assumption about long-term asset performance that CMS Energy and Consumers review annually for reasonableness and appropriateness.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
In Millions
|
|
|
OPEB
|
|
|
Three Months Ended
|
|
Nine Months Ended
|
|
September 30
|
2012
|
2011
|
|
2012
|
2011
|
|
CMS Energy, including Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic OPEB cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
8
|
|
$
|
7
|
|
|
$
|
24
|
|
$
|
20
|
|
Interest expense
|
|
|
21
|
|
|
20
|
|
|
|
62
|
|
|
58
|
|
Expected return on plan assets
|
|
|
(17)
|
|
|
(17)
|
|
|
|
(50)
|
|
|
(50)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
12
|
|
|
7
|
|
|
|
35
|
|
|
23
|
|
Prior service credit
|
|
|
(5)
|
|
|
(5)
|
|
|
|
(15)
|
|
|
(15)
|
|
Net periodic OPEB cost
|
|
$
|
19
|
|
$
|
12
|
|
|
$
|
56
|
|
$
|
36
|
|
Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic OPEB cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
7
|
|
$
|
7
|
|
|
$
|
23
|
|
$
|
20
|
|
Interest expense
|
|
|
20
|
|
|
19
|
|
|
|
60
|
|
|
56
|
|
Expected return on plan assets
|
|
|
(15)
|
|
|
(15)
|
|
|
|
(46)
|
|
|
(46)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
12
|
|
|
7
|
|
|
|
35
|
|
|
23
|
|
Prior service credit
|
|
|
(5)
|
|
|
(5)
|
|
|
|
(15)
|
|
|
(15)
|
|
Net periodic OPEB cost
|
|
$
|
19
|
|
$
|
13
|
|
|
$
|
57
|
|
$
|
38
|
|
|
Consumers Energy Company [Member]
|
|
| Schedule Of Net Benefit Costs |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
In Millions
|
|
|
Pension
|
|
|
Three Months Ended
|
|
Nine Months Ended
|
|
September 30
|
2012
|
2011
|
|
2012
|
2011
|
|
CMS Energy, including Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic pension cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
12
|
|
$
|
12
|
|
|
$
|
36
|
|
$
|
36
|
|
Interest expense
|
|
|
24
|
|
|
25
|
|
|
|
74
|
|
|
75
|
|
Expected return on plan assets
|
|
|
(31)
|
|
|
(28)
|
|
|
|
(94)
|
|
|
(84)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
19
|
|
|
16
|
|
|
|
57
|
|
|
47
|
|
Prior service cost
|
|
|
1
|
|
|
1
|
|
|
|
4
|
|
|
4
|
|
Net periodic pension cost
|
|
$
|
25
|
|
$
|
26
|
|
|
$
|
77
|
|
$
|
78
|
|
Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic pension cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
12
|
|
$
|
12
|
|
|
$
|
35
|
|
$
|
35
|
|
Interest expense
|
|
|
24
|
|
|
24
|
|
|
|
72
|
|
|
73
|
|
Expected return on plan assets
|
|
|
(30)
|
|
|
(27)
|
|
|
|
(91)
|
|
|
(82)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
18
|
|
|
15
|
|
|
|
55
|
|
|
46
|
|
Prior service cost
|
|
|
1
|
|
|
1
|
|
|
|
4
|
|
|
4
|
|
Net periodic pension cost
|
|
$
|
25
|
|
$
|
25
|
|
|
$
|
75
|
|
$
|
76
|
CMS Energy’s and Consumers’ expected long-term rate of return on Pension Plan assets is 7.75 percent. For the twelve months ended September 30, 2012, the actual return on Pension Plan assets was 18.6 percent, and for the twelve months ended September 30, 2011, the actual return was 2.0 percent. The expected rate of return is an assumption about long-term asset performance that CMS Energy and Consumers review annually for reasonableness and appropriateness.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
In Millions
|
|
|
OPEB
|
|
|
Three Months Ended
|
|
Nine Months Ended
|
|
September 30
|
2012
|
2011
|
|
2012
|
2011
|
|
CMS Energy, including Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic OPEB cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
8
|
|
$
|
7
|
|
|
$
|
24
|
|
$
|
20
|
|
Interest expense
|
|
|
21
|
|
|
20
|
|
|
|
62
|
|
|
58
|
|
Expected return on plan assets
|
|
|
(17)
|
|
|
(17)
|
|
|
|
(50)
|
|
|
(50)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
12
|
|
|
7
|
|
|
|
35
|
|
|
23
|
|
Prior service credit
|
|
|
(5)
|
|
|
(5)
|
|
|
|
(15)
|
|
|
(15)
|
|
Net periodic OPEB cost
|
|
$
|
19
|
|
$
|
12
|
|
|
$
|
56
|
|
$
|
36
|
|
Consumers
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net periodic OPEB cost
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Service cost
|
|
$
|
7
|
|
$
|
7
|
|
|
$
|
23
|
|
$
|
20
|
|
Interest expense
|
|
|
20
|
|
|
19
|
|
|
|
60
|
|
|
56
|
|
Expected return on plan assets
|
|
|
(15)
|
|
|
(15)
|
|
|
|
(46)
|
|
|
(46)
|
|
Amortization of:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net loss
|
|
|
12
|
|
|
7
|
|
|
|
35
|
|
|
23
|
|
Prior service credit
|
|
|
(5)
|
|
|
(5)
|
|
|
|
(15)
|
|
|
(15)
|
|
Net periodic OPEB cost
|
|
$
|
19
|
|
$
|
13
|
|
|
$
|
57
|
|
$
|
38
|
|