XML 92 R64.htm IDEA: XBRL DOCUMENT v2.4.0.6
Partners' Capital and Distributions (Details 5) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 0 Months Ended
May 31, 2012
May 31, 2011
Feb. 28, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Dec. 31, 2012
PNG
Dec. 31, 2012
PNG
Series A Subordinated Units
Dec. 31, 2010
PNG
Series A Subordinated Units
Dec. 31, 2012
PNG
Series B Subordinated Units
Dec. 31, 2010
PNG
Series B Subordinated Units
May 05, 2010
PNG
IPO
Jun. 30, 2010
PNG
IPO
May 05, 2010
PNG
IPO
Series A Subordinated Units
May 05, 2010
PNG
IPO
Series B Subordinated Units
Dec. 31, 2012
SLC Pipeline
May 05, 2010
PNGS
Apr. 30, 2010
PNGS
Partners Capital and Distribution                                    
Noncontrolling interests, ownership percentage of noncontrolling owners             36.00%                 25.00%    
Number of common units issued representing limited partner interest (in units)                       13,478,000 13,500,000          
Price per unit of common units issued                       $ 21.50            
Number of common units issued at closing of the IPO pursuant to the full exercise of the Underwriters's over-allotment option                       1,758,000            
Net proceeds received by PNG from sale of common units                       $ 268 $ 268          
Percent of equity represented by common units (as a percent)                       23.00%            
Ownership interest in PNGS prior to IPO (as a percent)                                   100.00%
Equity interest in PNGS contributed to PNG (as a percent)                                 100.00%  
Number of common units issued to Plains (in units)                       18,100,000   13,900,000 11,500,000      
General Partner Interest in PNG (as a percent)                       2.00%            
Non-controlling interests associated with the book value of PNG sold to third parties       370 268             167            
Increase to partners' capital                       $ 101            
PNG units owned by PAA (in units)         43,500,000 53,600,000   11,900,000 11,900,000 13,500,000 13,500,000              
Units purchased (in units)     10,200,000                              
Number of common units transfer to noncontrolling interests in connection with the settlement of equity compensation awards (in shares) (100,000) (100,000)