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Supplemental Guarantor Information (Statement Of Cash Flows) (Details) (USD $) | 6 Months Ended
--- | ---
Jun. 30, 2012 | Jun. 30, 2011
Net cash provided by (used in) operating activities | $ 211,540,000 | $ (219,327,000)
Cash flows from investing activities: |  |
Distributions from unconsolidated entities | 2,696,000 | 3,856,000
Investments in unconsolidated entities | (858,000) | (3,184,000)
Net change in loans held for investment | 627,000 | 519,000
Change in restricted cash related to letters of credit | 16,280,000 | (103,940,000)
Proceeds from the sale of fixed assets | 4,627,000 | 9,178,000
Capital expenditures | (6,997,000) | (10,848,000)
Net cash provided by (used in) investing activities | 16,375,000 | (104,419,000)
Cash flows from financing activities: |  |
Borrowings (repayments) under credit arrangements | 400,000 | (68,831,000)
Intercompany activities, net | 0 | 0
Stock repurchases | (908,000) | (1,956,000)
Net cash provided by (used in) financing activities | (508,000) | (70,787,000)
Net increase (decrease) in cash and equivalents | 227,407,000 | (394,533,000)
Cash and equivalents at beginning of period | 1,083,071,000 | 1,483,390,000
Cash and equivalents at end of period | 1,310,478,000 | 1,088,857,000
Parent Company [Member] |  |
Net cash provided by (used in) operating activities | (272,489,000) | (31,096,000)
Cash flows from investing activities: |  |
Distributions from unconsolidated entities | 0 | 0
Investments in unconsolidated entities | 0 | 0
Net change in loans held for investment | 0 | 0
Change in restricted cash related to letters of credit | 16,280,000 | (103,940,000)
Proceeds from the sale of fixed assets | 0 | 0
Capital expenditures | 0 | 0
Net cash provided by (used in) investing activities | 16,280,000 | (103,940,000)
Cash flows from financing activities: |  |
Borrowings (repayments) under credit arrangements | 0 | (69,311,000)
Intercompany activities, net | 271,521,000 | 294,696,000
Stock repurchases | (908,000) | (1,956,000)
Net cash provided by (used in) financing activities | 270,613,000 | 223,429,000
Net increase (decrease) in cash and equivalents | 14,404,000 | 88,393,000
Cash and equivalents at beginning of period | 119,287,000 | 10,000,000
Cash and equivalents at end of period | 133,691,000 | 98,393,000
Guarantor Subsidiaries [Member] |  |
Net cash provided by (used in) operating activities | 420,574,000 | (192,930,000)
Cash flows from investing activities: |  |
Distributions from unconsolidated entities | 2,696,000 | 3,856,000
Investments in unconsolidated entities | (858,000) | (3,184,000)
Net change in loans held for investment | 0 | 0
Change in restricted cash related to letters of credit | 0 | 0
Proceeds from the sale of fixed assets | 4,627,000 | 9,178,000
Capital expenditures | (5,451,000) | (9,249,000)
Net cash provided by (used in) investing activities | 1,014,000 | 601,000
Cash flows from financing activities: |  |
Borrowings (repayments) under credit arrangements | 400,000 | 480,000
Intercompany activities, net | (200,543,000) | (249,760,000)
Stock repurchases | 0 | 0
Net cash provided by (used in) financing activities | (200,143,000) | (249,280,000)
Net increase (decrease) in cash and equivalents | 221,445,000 | (441,609,000)
Cash and equivalents at beginning of period | 875,561,000 | 1,106,623,000
Cash and equivalents at end of period | 1,097,006,000 | 665,014,000
Non-Guarantor Subsidiaries [Member] |  |
Net cash provided by (used in) operating activities | 63,455,000 | 4,699,000
Cash flows from investing activities: |  |
Distributions from unconsolidated entities | 0 | 0
Investments in unconsolidated entities | 0 | 0
Net change in loans held for investment | 627,000 | 519,000
Change in restricted cash related to letters of credit | 0 | 0
Proceeds from the sale of fixed assets | 0 | 0
Capital expenditures | (1,546,000) | (1,599,000)
Net cash provided by (used in) investing activities | (919,000) | (1,080,000)
Cash flows from financing activities: |  |
Borrowings (repayments) under credit arrangements | 0 | 0
Intercompany activities, net | (70,978,000) | (44,936,000)
Stock repurchases | 0 | 0
Net cash provided by (used in) financing activities | (70,978,000) | (44,936,000)
Net increase (decrease) in cash and equivalents | (8,442,000) | (41,317,000)
Cash and equivalents at beginning of period | 88,223,000 | 366,767,000
Cash and equivalents at end of period | 79,781,000 | 325,450,000
Eliminating Entries [Member] |  |
Net cash provided by (used in) operating activities | 0 | 0
Cash flows from investing activities: |  |
Distributions from unconsolidated entities | 0 | 0
Investments in unconsolidated entities | 0 | 0
Net change in loans held for investment | 0 | 0
Change in restricted cash related to letters of credit | 0 | 0
Proceeds from the sale of fixed assets | 0 | 0
Capital expenditures | 0 | 0
Net cash provided by (used in) investing activities | 0 | 0
Cash flows from financing activities: |  |
Borrowings (repayments) under credit arrangements | 0 | 0
Intercompany activities, net | 0 | 0
Stock repurchases | 0 | 0
Net cash provided by (used in) financing activities | 0 | 0
Net increase (decrease) in cash and equivalents | 0 | 0
Cash and equivalents at beginning of period | 0 | 0
Cash and equivalents at end of period | $ 0 | $ 0

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