Provision (Benefit) for Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Provision (benefit) for income taxes [Table Text Block]
The Provision (benefit) for income taxes includes:
 
Three months ended  
 March 31,
 
2015
 
2014
 
(Millions)
Deferred:
 
 
 
State
$
1

 
$
1

Foreign
2

 
7

 
3

 
8

Total provision (benefit)
$
3

 
$
8