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Schedule I - Condensed Financial Information of Registrant (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2011 integer | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 integer | Dec. 31, 2010 | Dec. 31, 2009
Current Assets: |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ 1,710 |  |  |  | $ 2,525 |  |  |  | $ 1,710 | $ 2,525 | $ 851
Restricted cash | 484 |  |  |  | 404 |  |  |  | 484 | 404 |
Accounts and notes receivable from subsidiaries | 7 |  |  |  | 27 |  |  |  | 7 | 27 |
Deferred income taxes | 454 |  |  |  | 300 |  |  |  | 454 | 300 |
Total current assets | 9,228 |  |  |  | 9,446 |  |  |  | 9,228 | 9,446 |
Noncurrent Assets: |  |  |  |  |  |  |  |  |  |  |
Investments in and advances to affiliates | 1,422 |  |  |  | 1,320 |  |  |  | 1,422 | 1,320 | 1,157
Office equipment: |  |  |  |  |  |  |  |  |  |  |
Cost | 31,948 |  |  |  | 26,514 |  |  |  | 31,948 | 26,514 |
Accumulated depreciation | (9,145) |  |  |  | (8,643) |  |  |  | (9,145) | (8,643) |
Office equipment, net | 25,731 |  |  |  | 23,429 |  |  |  | 25,731 | 23,429 |
Other assets: |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes | 715 |  |  |  | 589 |  |  |  | 715 | 589 |
Other noncurrent assets | 2,340 |  |  |  | 1,937 |  |  |  | 2,340 | 1,937 |
Total other assets | 10,374 |  |  |  | 7,636 |  |  |  | 10,374 | 7,636 |
Total | 45,333 |  |  |  | 40,511 |  |  |  | 45,333 | 40,511 | 39,535
Current Liabilities: |  |  |  |  |  |  |  |  |  |  |
Accounts payable | 2,020 |  |  |  | 1,988 |  |  |  | 2,020 | 1,988 |
Accrued and other liabilities | 3,419 |  |  |  | 2,493 |  |  |  | 3,419 | 2,493 |
Total current liabilities | 8,446 |  |  |  | 8,065 |  |  |  | 8,446 | 8,065 |
Long-term Liabilities: |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities | 3,119 |  |  |  | 2,566 |  |  |  | 3,119 | 2,566 |
Total long-term liabilities | 27,080 |  |  |  | 21,973 |  |  |  | 27,080 | 21,973 |
Stockholders' equity: |  |  |  |  |  |  |  |  |  |  |
Common stock | 8 |  |  |  | 8 |  |  |  | 8 | 8 |
Additional paid-in capital | 8,507 |  |  |  | 8,444 |  |  |  | 8,507 | 8,444 |
Retained earnings | 678 |  |  |  | 620 |  |  |  | 678 | 620 |
Accumulated other comprehensive loss | (2,758) |  |  |  | (2,383) |  |  |  | (2,758) | (2,383) |
Treasury stock, at cost (42,386,961 and 17,287,073 shares at December 31, 2011 and 2010, respectively | (489) |  |  |  | (216) |  |  |  | (489) | (216) |
Total stockholders' equity | 5,946 |  |  |  | 6,473 |  |  |  | 5,946 | 6,473 |
Total | 45,333 |  |  |  | 40,511 |  |  |  | 45,333 | 40,511 |
Statements of Unconsolidated Operations |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  | 400 | 408 | 344
General and administrative expenses |  |  |  |  |  |  |  |  | (391) | (392) | (339)
Interest expense |  |  |  |  |  |  |  |  | (1,603) | (1,503) | (1,461)
Income tax benefit (expense) |  |  |  |  |  |  |  |  | 636 | 579 | 557
Net income | (209) | (131) | 174 | 224 | (436) | 114 | 144 | 187 | 58 | 9 | 658
Statements of Unconsolidated Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 2,884 | 3,465 | 2,211
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Acquisitions - net of cash acquired |  |  |  |  |  |  |  |  | (3,562) | (254) | 0
(Increase) decrease in restricted cash |  |  |  |  |  |  |  |  | 61 | (104) | 302
Net cash used in investing activities |  |  |  |  |  |  |  |  | (4,906) | (2,040) | (1,917)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Borrowings under the revolving credit facilities, net |  |  |  |  |  |  |  |  | 437 | 78 | 11
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 0 | 1,567 | 0
Purchase of treasury stock |  |  |  |  |  |  |  |  | (279) | (99) | 0
Payments for financing fees |  |  |  |  |  |  |  |  | (202) | (61) | (91)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | 1,412 | (706) | 610
Total increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  | (815) | 766 | 908
Cash and cash equivalents, beginning |  |  |  | 2,525 |  |  |  | 851 | 2,525 | 851 |
Cash and cash equivalents, ending | 1,710 |  |  |  | 2,525 |  |  |  | 1,710 | 2,525 | 851
Supplemental disclosures: |  |  |  |  |  |  |  |  |  |  |
Cash payments for interest, net of amounts capitalized |  |  |  |  |  |  |  |  | 1,442 | 1,462 | 1,395
Cash payments for income taxes, net of refunds |  |  |  |  |  |  |  |  | 971 | 698 | 484
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 6,485 |  |  |  | 4,612 |  |  |  | 6,485 | 4,612 |
Current maturities of recourse debt | 305 |  |  |  | 463 |  |  |  | 305 | 463 |
Recourse debt - noncurrent | 6,180 |  |  |  | 4,149 |  |  |  | 6,180 | 4,149 |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 6,485 |  |  |  | 4,612 |  |  |  | 6,485 | 4,612 |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 624 |  |  |  |  |  |  |  | 624 |  |
Number of Agreements | 46 |  |  |  |  |  |  |  | 46 |  |
Letter of credit fee range (minimum) |  |  |  |  |  |  |  |  | 0.25% |  |
Letter of credit fee range (maximum) |  |  |  |  |  |  |  |  | 3.25% |  |
Guarantees |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 351 |  |  |  |  |  |  |  | 351 |  |
Number of Agreements | 22 |  |  |  |  |  |  |  | 22 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | 53 |  |
Letters of credit under secured credit facility |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 12 |  |  |  |  |  |  |  | 12 |  |
Number of Agreements | 11 |  |  |  |  |  |  |  | 11 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | 7 |  |
Cash Collateralized Letters Of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 261 |  |  |  |  |  |  |  | 261 |  |
Number of Agreements | 13 |  |  |  |  |  |  |  | 13 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | 221 |  |
Senior Secured Term Loan LIBOR Plus 175 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 200 |  |  |  | 0 | 200 |
Interest Rate - Percent Over LIBOR | 1.75% |  |  |  |  |  |  |  | 1.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 200 |  |  |  | 0 | 200 |
Senior Unsecured Note 8875 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 129 |  |  |  | 0 | 129 |
Interest Rate | 8.875% |  |  |  |  |  |  |  | 8.875% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 129 |  |  |  | 0 | 129 |
Senior Unsecured Note 8375 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 134 |  |  |  | 0 | 134 |
Interest Rate | 8.375% |  |  |  |  |  |  |  | 8.375% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 134 |  |  |  | 0 | 134 |
Senior Unsecured Note 775 Due 2014 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Interest Rate | 7.75% |  |  |  |  |  |  |  | 7.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Senior Unsecured Note 775 Due 2015 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Interest Rate | 7.75% |  |  |  |  |  |  |  | 7.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Revolving Credit Loan Facility LIBOR Plus 300 Due 2015 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 295 |  |  |  | 0 |  |  |  | 295 | 0 |
Interest Rate - Percent Over LIBOR | 3.00% |  |  |  |  |  |  |  | 3.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 295 |  |  |  | 0 |  |  |  | 295 | 0 |
Senior Unsecured Note 975 Due 2016 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 535 |  |  |  | 535 |  |  |  | 535 | 535 |
Interest Rate | 9.75% |  |  |  |  |  |  |  | 9.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 535 |  |  |  | 535 |  |  |  | 535 | 535 |
Senior Unsecured Note 800 Due 2017 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,500 |  |  |  | 1,500 |  |  |  | 1,500 | 1,500 |
Interest Rate | 8.00% |  |  |  |  |  |  |  | 8.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,500 |  |  |  | 1,500 |  |  |  | 1,500 | 1,500 |
Senior Secured Term Loan LIBOR Plus 325 Due 2018 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,042 |  |  |  | 0 |  |  |  | 1,042 | 0 |
Interest Rate - Percent Over LIBOR | 3.25% |  |  |  |  |  |  |  | 3.25% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,042 |  |  |  | 0 |  |  |  | 1,042 | 0 |
Senior Unsecured Note 800 Due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 625 |  |  |  | 625 |  |  |  | 625 | 625 |
Interest Rate | 8.00% |  |  |  |  |  |  |  | 8.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 625 |  |  |  | 625 |  |  |  | 625 | 625 |
Senior Unsecured Note 7375 Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,000 |  |  |  | 0 |  |  |  | 1,000 | 0 |
Interest Rate | 7.375% |  |  |  |  |  |  |  | 7.375% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,000 |  |  |  | 0 |  |  |  | 1,000 | 0 |
Term Convertible Trust Securities 675 Due 2029 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 517 |  |  |  | 517 |  |  |  | 517 | 517 |
Interest Rate | 6.75% |  |  |  |  |  |  |  | 6.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 517 |  |  |  | 517 |  |  |  | 517 | 517 |
Unamortized Discounts [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | (29) |  |  |  | (28) |  |  |  | (29) | (28) |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | (29) |  |  |  | (28) |  |  |  | (29) | (28) |
Parent Company |  |  |  |  |  |  |  |  |  |  |
Current Assets: |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 189 |  |  |  | 594 |  |  |  | 189 | 594 | 628
Restricted cash | 50 |  |  |  | 10 |  |  |  | 50 | 10 |
Accounts and notes receivable from subsidiaries | 871 |  |  |  | 839 |  |  |  | 871 | 839 |
Deferred income taxes | 24 |  |  |  | 23 |  |  |  | 24 | 23 |
Prepaid expenses and other current assets | 43 |  |  |  | 31 |  |  |  | 43 | 31 |
Total current assets | 1,177 |  |  |  | 1,497 |  |  |  | 1,177 | 1,497 |
Noncurrent Assets: |  |  |  |  |  |  |  |  |  |  |
Investments in and advances to affiliates | 12,088 |  |  |  | 10,741 |  |  |  | 12,088 | 10,741 |
Office equipment: |  |  |  |  |  |  |  |  |  |  |
Cost | 81 |  |  |  | 93 |  |  |  | 81 | 93 |
Accumulated depreciation | (67) |  |  |  | (59) |  |  |  | (67) | (59) |
Office equipment, net | 14 |  |  |  | 34 |  |  |  | 14 | 34 |
Other assets: |  |  |  |  |  |  |  |  |  |  |
Deferred financing costs (net of accumulated amortization of $0 and $39, respectively) | 92 |  |  |  | 64 |  |  |  | 92 | 64 |
Deferred income taxes | 525 |  |  |  | 352 |  |  |  | 525 | 352 |
Other noncurrent assets | 222 |  |  |  | 1 |  |  |  | 222 | 1 |
Total other assets | 839 |  |  |  | 417 |  |  |  | 839 | 417 |
Total | 14,118 |  |  |  | 12,689 |  |  |  | 14,118 | 12,689 |
Current Liabilities: |  |  |  |  |  |  |  |  |  |  |
Accounts payable | 21 |  |  |  | 14 |  |  |  | 21 | 14 |
Accounts and notes payable to subsidiaries | 317 |  |  |  | 253 |  |  |  | 317 | 253 |
Accrued and other liabilities | 199 |  |  |  | 175 |  |  |  | 199 | 175 |
Term loan | 0 |  |  |  | 200 |  |  |  | 0 | 200 |
Senior notes payable - current portion | 305 |  |  |  | 263 |  |  |  | 305 | 263 |
Total current liabilities | 842 |  |  |  | 905 |  |  |  | 842 | 905 |
Long-term Liabilities: |  |  |  |  |  |  |  |  |  |  |
Term loan | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Senior notes payable | 5,663 |  |  |  | 3,632 |  |  |  | 5,663 | 3,632 |
Junior subordinated notes and debentures payable | 517 |  |  |  | 517 |  |  |  | 517 | 517 |
Accounts and notes payable to subsidiaries | 1,007 |  |  |  | 1,055 |  |  |  | 1,007 | 1,055 |
Other long-term liabilities | 143 |  |  |  | 107 |  |  |  | 143 | 107 |
Total long-term liabilities | 7,330 |  |  |  | 5,311 |  |  |  | 7,330 | 5,311 |
Stockholders' equity: |  |  |  |  |  |  |  |  |  |  |
Common stock | 8 |  |  |  | 8 |  |  |  | 8 | 8 |
Additional paid-in capital | 8,507 |  |  |  | 8,444 |  |  |  | 8,507 | 8,444 |
Retained earnings | 678 |  |  |  | 620 |  |  |  | 678 | 620 |
Accumulated other comprehensive loss | (2,758) |  |  |  | (2,383) |  |  |  | (2,758) | (2,383) |
Treasury stock, at cost (42,386,961 and 17,287,073 shares at December 31, 2011 and 2010, respectively | (489) |  |  |  | (216) |  |  |  | (489) | (216) |
Total stockholders' equity | 5,946 |  |  |  | 6,473 |  |  |  | 5,946 | 6,473 |
Total | 14,118 |  |  |  | 12,689 |  |  |  | 14,118 | 12,689 |
Unconsolidated Balance Sheets (Parentheticals) |  |  |  |  |  |  |  |  |  |  |
Deferred financing costs, accumulated amortization | 74 |  |  |  | 39 |  |  |  | 74 | 39 |
Statements of Unconsolidated Operations |  |  |  |  |  |  |  |  |  |  |
Revenues from subsidiaries and affiliates |  |  |  |  |  |  |  |  | 59 | 34 | 39
Equity in earnings of subsidiaries and affiliates |  |  |  |  |  |  |  |  | 357 | 590 | 983
Interest income |  |  |  |  |  |  |  |  | 199 | 279 | 131
General and administrative expenses |  |  |  |  |  |  |  |  | (241) | (261) | (218)
Interest expense |  |  |  |  |  |  |  |  | (490) | (461) | (485)
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (116) | 181 | 450
Income tax benefit (expense) |  |  |  |  |  |  |  |  | (174) | 172 | (208)
Net income |  |  |  |  |  |  |  |  | 58 | 9 | 658
Statements of Unconsolidated Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 1,569 | 488 | 178
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Investment in and advances to subsidiaries |  |  |  |  |  |  |  |  | 2,823 | 1,185 | 452
Acquisitions - net of cash acquired |  |  |  |  |  |  |  |  | 2 | (3) | (5)
Return of capital |  |  |  |  |  |  |  |  | 363 | 300 | 166
(Increase) decrease in restricted cash |  |  |  |  |  |  |  |  | (261) | (2) | 4
Additions to property, plant and equipment |  |  |  |  |  |  |  |  | (28) | (22) | (8)
Net cash used in investing activities |  |  |  |  |  |  |  |  | (2,747) | (912) | (295)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Borrowings of notes payable and other coupon bearing securities |  |  |  |  |  |  |  |  | 2,050 | 0 | 503
Borrowings under the revolving credit facilities, net |  |  |  |  |  |  |  |  | 295 | 0 | 0
Repayments of notes payable and other coupon bearing securities |  |  |  |  |  |  |  |  | 477 | 914 | 154
Loans from subsidiaries |  |  |  |  |  |  |  |  | (744) | (154) | 205
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 3 | 1,569 | 14
Purchase of treasury stock |  |  |  |  |  |  |  |  | (279) | (99) | 0
Payments for financing fees |  |  |  |  |  |  |  |  | (75) | (12) | (23)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | 773 | 390 | 545
Total increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  | (405) | (34) | 428
Cash and cash equivalents, beginning |  |  |  | 594 |  |  |  | 628 | 594 | 628 | 200
Cash and cash equivalents, ending | 189 |  |  |  | 594 |  |  |  | 189 | 594 | 628
Supplemental disclosures: |  |  |  |  |  |  |  |  |  |  |
Cash payments for interest, net of amounts capitalized |  |  |  |  |  |  |  |  | 392 | 412 | 410
Cash payments for income taxes, net of refunds |  |  |  |  |  |  |  |  | (6) | 0 | 0
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 6,485 |  |  |  | 4,612 |  |  |  | 6,485 | 4,612 |
Current maturities of recourse debt | (305) |  |  |  | (463) |  |  |  | (305) | (463) |
Recourse debt - noncurrent | 6,180 |  |  |  | 4,149 |  |  |  | 6,180 | 4,149 |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
2012 | 305 |  |  |  |  |  |  |  | 305 |  |
2013 | 11 |  |  |  |  |  |  |  | 11 |  |
2014 | 509 |  |  |  |  |  |  |  | 509 |  |
2015 | 511 |  |  |  |  |  |  |  | 511 |  |
2016 | 523 |  |  |  |  |  |  |  | 523 |  |
Thereafter | 4,626 |  |  |  |  |  |  |  | 4,626 |  |
Total debt | 6,485 |  |  |  | 4,612 |  |  |  | 6,485 | 4,612 |
Dividends From Subsidiaries and Affiliates |  |  |  |  |  |  |  |  |  |  |
Subsidiaries |  |  |  |  |  |  |  |  | 1,059 | 944 | 948
Affiliates |  |  |  |  |  |  |  |  | 25 | 10 | 60
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Letter of credit fee range (minimum) |  |  |  |  |  |  |  |  | 0.25% |  |
Letter of credit fee range (maximum) |  |  |  |  |  |  |  |  | 3.25% |  |
Parent Company | Guarantees |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 351 |  |  |  |  |  |  |  | 351 |  |
Number of Agreements | 22 |  |  |  |  |  |  |  | 22 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | less than $1 million up to $53 million |  |
Parent Company | Letters of credit under secured credit facility |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 12 |  |  |  |  |  |  |  | 12 |  |
Number of Agreements | 11 |  |  |  |  |  |  |  | 11 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | less than $1 million up to $7 million |  |
Parent Company | Cash Collateralized Letters Of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantees and Letters of Credit |  |  |  |  |  |  |  |  |  |  |
Obligations Maximum Exposure Total | 261 |  |  |  |  |  |  |  | 261 |  |
Number of Agreements | 13 |  |  |  |  |  |  |  | 13 |  |
Maximum Exposure Range for Each Agreement |  |  |  |  |  |  |  |  | less than $1 million up to $221 million |  |
Parent Company | Senior Secured Term Loan LIBOR Plus 175 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 200 |  |  |  | 0 | 200 |
Interest Rate - Percent Over LIBOR | 1.75% |  |  |  |  |  |  |  | 1.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 200 |  |  |  | 0 | 200 |
Parent Company | Senior Unsecured Note 8875 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 129 |  |  |  | 0 | 129 |
Interest Rate | 8.875% |  |  |  |  |  |  |  | 8.875% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 129 |  |  |  | 0 | 129 |
Parent Company | Senior Unsecured Note 8375 Due 2011 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 0 |  |  |  | 134 |  |  |  | 0 | 134 |
Interest Rate | 8.375% |  |  |  |  |  |  |  | 8.375% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 0 |  |  |  | 134 |  |  |  | 0 | 134 |
Parent Company | Senior Unsecured Note 775 Due 2014 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Interest Rate | 7.75% |  |  |  |  |  |  |  | 7.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Parent Company | Senior Unsecured Note 775 Due 2015 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Interest Rate | 7.75% |  |  |  |  |  |  |  | 7.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 500 |  |  |  | 500 |  |  |  | 500 | 500 |
Parent Company | Revolving Credit Loan Facility LIBOR Plus 300 Due 2015 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 295 |  |  |  | 0 |  |  |  | 295 | 0 |
Interest Rate - Percent Over LIBOR | 3.00% |  |  |  |  |  |  |  | 3.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 295 |  |  |  | 0 |  |  |  | 295 | 0 |
Parent Company | Senior Unsecured Note 975 Due 2016 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 535 |  |  |  | 535 |  |  |  | 535 | 535 |
Interest Rate | 9.75% |  |  |  |  |  |  |  | 9.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 535 |  |  |  | 535 |  |  |  | 535 | 535 |
Parent Company | Senior Unsecured Note 800 Due 2017 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,500 |  |  |  | 1,500 |  |  |  | 1,500 | 1,500 |
Interest Rate | 8.00% |  |  |  |  |  |  |  | 8.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,500 |  |  |  | 1,500 |  |  |  | 1,500 | 1,500 |
Parent Company | Senior Secured Term Loan LIBOR Plus 325 Due 2018 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,042 |  |  |  | 0 |  |  |  | 1,042 | 0 |
Interest Rate - Percent Over LIBOR | 3.25% |  |  |  |  |  |  |  | 3.25% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,042 |  |  |  | 0 |  |  |  | 1,042 | 0 |
Parent Company | Senior Unsecured Note 800 Due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 625 |  |  |  | 625 |  |  |  | 625 | 625 |
Interest Rate | 8.00% |  |  |  |  |  |  |  | 8.00% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 625 |  |  |  | 625 |  |  |  | 625 | 625 |
Parent Company | Senior Unsecured Note 7375 Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 1,000 |  |  |  | 0 |  |  |  | 1,000 | 0 |
Interest Rate | 7.375% |  |  |  |  |  |  |  | 7.375% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 1,000 |  |  |  | 0 |  |  |  | 1,000 | 0 |
Parent Company | Term Convertible Trust Securities 675 Due 2029 [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | 517 |  |  |  | 517 |  |  |  | 517 | 517 |
Interest Rate | 6.75% |  |  |  |  |  |  |  | 6.75% |  |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | 517 |  |  |  | 517 |  |  |  | 517 | 517 |
Parent Company | Unamortized Discounts [Member] |  |  |  |  |  |  |  |  |  |  |
Recourse Debt |  |  |  |  |  |  |  |  |  |  |
Recourse debt | (29) |  |  |  | (28) |  |  |  | (29) | (28) |
Future Maturities of Debt |  |  |  |  |  |  |  |  |  |  |
Total debt | $ (29) |  |  |  | $ (28) |  |  |  | $ (29) | $ (28) |

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