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Debt And Other Financing Arrangements (Tables) | 9 Months Ended
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Sep. 30, 2011
Debt And Other Financing Arrangements [Abstract] |
Summary Of Company's Senior Notes |
|  | September 30, 2011 |  |  | December 31, 2010 |
8.125% unsecured senior notes due February 2011 (a) |  | $ | — |  |  | $ | 13,900 |
5.45% unsecured senior notes due August 2012 (b) |  |  | 96,955 |  |  |  | 104,823 |
6.25% unsecured senior notes due February 2013 (b) |  |  | 62,662 |  |  |  | 62,617 |
5.125% unsecured senior notes due October 2013 (b) |  |  | 116,871 |  |  |  | 160,212 |
5.25% unsecured senior notes due January 2014 (b) |  |  | 335,865 |  |  |  | 335,848 |
5.70% unsecured senior notes due May 2014 (b) |  |  | 311,187 |  |  |  | 309,048 |
5.20% unsecured senior notes due February 2015 (b) |  |  | 244,873 |  |  |  | 244,839 |
5.25% unsecured senior notes due June 2015 (b) |  |  | 402,202 |  |  |  | 397,700 |
6.50% unsecured senior notes due May 2016 (b) |  |  | 468,521 |  |  |  | 466,644 |
7.625% unsecured senior notes due October 2017 (a) |  |  | 149,346 |  |  |  | 149,265 |
7.875% unsecured senior notes due June 2032 (b) |  |  | 299,098 |  |  |  | 299,065 |
6.375% unsecured senior notes due May 2033 (b) |  |  | 398,400 |  |  |  | 398,344 |
6.00% unsecured senior notes due February 2035 (b) |  |  | 299,383 |  |  |  | 299,363 |
7.375% unsecured senior notes due June 2046 (b) |  |  | 150,000 |  |  |  | 150,000 |
Total senior notes—carrying value (c) |  | $ | 3,335,363 |  |  | $ | 3,391,668 |
Estimated fair value |  | $ | 2,963,087 |  |  | $ | 3,227,404 |
(a) | Not redeemable prior to maturity, guaranteed on a senior basis by certain wholly-owned subsidiaries
(b) | Redeemable prior to maturity, guaranteed on a senior basis by certain wholly-owned subsidiaries
(c) | The recorded carrying value reflects the impact of various discounts and premiums that are amortized to interest cost over the respective terms of the senior notes

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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