v2.4.0.8
Condensed Consolidating Financial Information (Details 3) (USD $)
In Millions, unless otherwise specified
 0 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 19, 2013
Mar. 31, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Condensed Consolidating Financial Information            
Cash flows from operating activities     $ 416 $ 459 $ 522 $ 999
Cash flows from investing activities            
Capital expenditures     (352) (207) (840) (445)
Capital expenditures for discontinued operations       (29)   (51)
Proceeds from disposal of assets, net     3 1 4 8
Proceeds from disposal of discontinued operations, net       160 63 194
Cash proceeds received from the sale of preference shares     185   185  
Other, net         12 25
Net cash used in investing activities     (161) (62) (576) (269)
Cash flows from financing activities            
Changes in short-term borrowings, net       (260)   (260)
Repayments of debt     (406) (173) (1,596) (320)
Proceeds from restricted cash investments     78 84 206 192
Deposits to restricted cash investments     (45) (74) (104) (116)
Distribution of qualifying additional paid-in capital (204) (278) (204)   (204) (278)
Other, net         (25) (1)
Net cash used in financing activities     (587) (415) (1,723) (783)
Net decrease in cash and cash equivalents     (332) (18) (1,777) (53)
Cash and cash equivalents at beginning of period     3,689 3,982 5,134 4,017
Cash and cash equivalents at end of period   3,982 3,357 3,964 3,357 3,964
Parent Guarantor
            
Condensed Consolidating Financial Information            
Cash flows from operating activities         (26) (31)
Cash flows from financing activities            
Distribution of qualifying additional paid-in capital         (204) (278)
Financing activities with affiliates, net         207 325
Net cash used in financing activities         3 47
Net decrease in cash and cash equivalents         (23) 16
Cash and cash equivalents at beginning of period         24 3
Cash and cash equivalents at end of period     1 19 1 19
Subsidiary Issuer
            
Condensed Consolidating Financial Information            
Cash flows from operating activities         (340) (570)
Cash flows from investing activities            
Cash proceeds received from the sale of preference shares         185  
Investing activities with affiliates, net         (700) (1,816)
Other, net           19
Net cash used in investing activities         (515) (1,797)
Cash flows from financing activities            
Repayments of debt         (562) (30)
Financing activities with affiliates, net         (33) 1,819
Other, net         (13) (9)
Net cash used in financing activities         (608) 1,780
Net decrease in cash and cash equivalents         (1,463) (587)
Cash and cash equivalents at beginning of period         3,155 2,793
Cash and cash equivalents at end of period     1,692 2,206 1,692 2,206
Other Subsidiaries
            
Condensed Consolidating Financial Information            
Cash flows from operating activities         888 1,600
Cash flows from investing activities            
Capital expenditures         (840) (445)
Capital expenditures for discontinued operations           (51)
Proceeds from disposal of assets, net         4 8
Proceeds from disposal of discontinued operations, net         63 194
Investing activities with affiliates, net         (204) (2,269)
Other, net         12 6
Net cash used in investing activities         (965) (2,557)
Cash flows from financing activities            
Changes in short-term borrowings, net           (260)
Repayments of debt         (1,034) (290)
Proceeds from restricted cash investments         206 192
Deposits to restricted cash investments         (104) (116)
Financing activities with affiliates, net         730 1,941
Other, net         (12) 8
Net cash used in financing activities         (214) 1,475
Net decrease in cash and cash equivalents         (291) 518
Cash and cash equivalents at beginning of period         1,955 1,221
Cash and cash equivalents at end of period     1,664 1,739 1,664 1,739
Consolidating adjustments
            
Cash flows from investing activities            
Investing activities with affiliates, net         904 4,085
Net cash used in investing activities         904 4,085
Cash flows from financing activities            
Financing activities with affiliates, net         (904) (4,085)
Net cash used in financing activities         $ (904) $ (4,085)