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Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]  
Schedule Of Net Benefit Costs



 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

In Millions  



DB Pension Plan

 

OPEB Plan

 

Three Months Ended March 31

2017  2016 

 

2017  2016 

 

CMS Energy, including Consumers

Net periodic cost (credit)

Service cost

 

$

11 

 

$

11 

 

 

$

 

$

 

Interest cost

 

 

22 

 

 

21 

 

 

 

13 

 

 

12 

 

Expected return on plan assets

 

 

(38)

 

 

(37)

 

 

 

(22)

 

 

(22)

 

Amortization of:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

 

20 

 

 

17 

 

 

 

 

 

 

Prior service cost (credit)

 

 

 

 

 

 

 

(9)

 

 

(10)

 

Net periodic cost (credit)

 

$

16 

 

$

13 

 

 

$

(5)

 

$

(10)

 

Consumers

Net periodic cost (credit)

Service cost

 

$

11 

 

$

10 

 

 

$

 

$

 

Interest cost

 

 

21 

 

 

21 

 

 

 

13 

 

 

11 

 

Expected return on plan assets

 

 

(37)

 

 

(36)

 

 

 

(21)

 

 

(20)

 

Amortization of:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

 

20 

 

 

17 

 

 

 

 

 

 

Prior service cost (credit)

 

 

 

 

 

 

 

(9)

 

 

(10)

 

Net periodic cost (credit)

 

$

16 

 

$

13 

 

 

$

(4)

 

$

(9)

 



Consumers Energy Company [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule Of Net Benefit Costs



 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

In Millions  



DB Pension Plan

 

OPEB Plan

 

Three Months Ended March 31

2017  2016 

 

2017  2016 

 

CMS Energy, including Consumers

Net periodic cost (credit)

Service cost

 

$

11 

 

$

11 

 

 

$

 

$

 

Interest cost

 

 

22 

 

 

21 

 

 

 

13 

 

 

12 

 

Expected return on plan assets

 

 

(38)

 

 

(37)

 

 

 

(22)

 

 

(22)

 

Amortization of:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

 

20 

 

 

17 

 

 

 

 

 

 

Prior service cost (credit)

 

 

 

 

 

 

 

(9)

 

 

(10)

 

Net periodic cost (credit)

 

$

16 

 

$

13 

 

 

$

(5)

 

$

(10)

 

Consumers

Net periodic cost (credit)

Service cost

 

$

11 

 

$

10 

 

 

$

 

$

 

Interest cost

 

 

21 

 

 

21 

 

 

 

13 

 

 

11 

 

Expected return on plan assets

 

 

(37)

 

 

(36)

 

 

 

(21)

 

 

(20)

 

Amortization of:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

 

20 

 

 

17 

 

 

 

 

 

 

Prior service cost (credit)

 

 

 

 

 

 

 

(9)

 

 

(10)

 

Net periodic cost (credit)

 

$

16 

 

$

13 

 

 

$

(4)

 

$

(9)