v2.4.0.6
Equity In Net Assets Of Nonconsolidated Affiliates Equity in net assets of nonconsolidated affiliates (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Jun. 30, 2012
China JVs [Member]
Jun. 30, 2011
China JVs [Member]
Jun. 30, 2012
China JVs [Member]
Jun. 30, 2011
China JVs [Member]
Jun. 30, 2012
New Delphi [Member]
Jun. 30, 2011
New Delphi [Member]
Mar. 31, 2011
New Delphi [Member]
Jun. 30, 2012
New Delphi [Member]
Jun. 30, 2011
New Delphi [Member]
Jun. 30, 2012
Other nonconsolidated affiliates [Member]
Jun. 30, 2011
Other nonconsolidated affiliates [Member]
Jun. 30, 2012
Other nonconsolidated affiliates [Member]
Jun. 30, 2011
Other nonconsolidated affiliates [Member]
Jun. 30, 2012
SGM [Member]
Jun. 30, 2011
SGM [Member]
Jun. 30, 2012
SGM Norsom [Member]
Jun. 30, 2011
SGM Norsom [Member]
Jun. 30, 2012
SGM DY [Member]
Jun. 30, 2011
SGM DY [Member]
Jun. 30, 2012
SGM DYPT [Member]
Jun. 30, 2011
SGM DYPT [Member]
Jun. 30, 2012
SGMW [Member]
Jun. 30, 2011
SGMW [Member]
Jun. 30, 2012
FAW-GM [Member]
Jun. 30, 2011
FAW-GM [Member]
Jun. 30, 2012
PATAC [Member]
Jun. 30, 2011
PATAC [Member]
Jun. 30, 2012
Shanghai Onstar [Member]
Jun. 30, 2011
Shanghai Onstar [Member]
Jun. 30, 2012
Shanghai Chengxin [Member]
Jun. 30, 2011
Shanghai Chengxin [Member]
Jun. 30, 2012
SGMS [Member]
Mar. 31, 2011
HKJV [Member]
Jun. 30, 2012
HKJV [Member]
Jun. 30, 2012
HKJV [Member]
Level 3 [Member]
Dec. 31, 2011
HKJV [Member]
Level 3 [Member]
Jun. 30, 2011
VM Motori [Member]
Jun. 30, 2012
Nonconsolidated Affiliates [Member]
Jun. 30, 2011
Nonconsolidated Affiliates [Member]
Jun. 30, 2012
Nonconsolidated Affiliates [Member]
Jun. 30, 2011
Nonconsolidated Affiliates [Member]
Dec. 31, 2011
Nonconsolidated Affiliates [Member]
Schedule of Equity Method Investments [Line Items]                                                                                              
Equity income, net of tax and gain on disposal of investments $ 300,000,000 $ 382,000,000 $ 723,000,000 $ 2,526,000,000   $ 331,000,000 $ 379,000,000 $ 750,000,000 $ 829,000,000 $ 0 $ 0   $ 0 $ 1,727,000,000 $ (31,000,000) $ 3,000,000 $ (27,000,000) $ (30,000,000)                                                          
Dividends from nonconsolidated affiliates                                                                                     1,300,000,000 1,100,000,000 1,400,000,000 1,100,000,000  
Undistributed Earnings from Nonconsolidated Affiliates                                                                                     909,000,000   909,000,000   1,600,000,000
Direct ownership in investee                       100.00%             49.00% 49.00% 25.00% 25.00% 25.00% 25.00% 25.00% 25.00% 44.00% 44.00% 50.00% 50.00% 50.00% 50.00% 40.00% 40.00% 33.00% 33.00% 49.00%         50.00%          
Equity Method Investment Ownership Percentage By Parent                                     51.00%                                   51.00%   50.00%                
SGM Ownership Percent of Other JVs                                         50.00%   50.00%   50.00%               20.00%   33.00%                        
SAIC Ownership Percent in Joint Ventures                                         25.00%   25.00%   25.00%                                            
Proceeds from Sale of New Delphi                       3,800,000,000                                                                      
Percentage of New Delphi's Interests Issued and Outstanding                       100.00%                                                                      
Maximum Obligation on Loan to New Delphi                       500,000,000                                                                      
Gain on sale of New Delphi Class A membership interest                       1,600,000,000                                                                      
Impairment of Equity Investment                                                                           39,000,000                  
Other Noncash Expense                                                                           67,000,000                  
Future Capital Injection                                                                             173,000,000                
Put option, Fair Value                                                                               94,000,000 88,000,000            
Put option, Unrealized Losses                                                                               70,000,000 64,000,000            
Expected Payments to Acquire Additional Interest in HKJV                                                                             125,000,000                
Expected Ownership Percentage by SAIC in HKJV                                                                             9.00%                
Goodwill allocated 28,405,000,000   28,405,000,000   29,019,000,000                                                                         36,000,000          
Equity interest in VMM $ 7,058,000,000   $ 7,058,000,000   $ 6,790,000,000                                                                         $ 46,000,000