v2.4.0.8

Debt (Consolidated Debt) (Details) (USD $) | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Total debt | $ 2,941,276,000 |  | $ 2,685,287,000
Weighted-Average Interest Rate | 5.20% | [1] |
Debt Instrument, Face Amount | 2,900,000,000 |  | 2,700,000,000
Revolving Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 0 |  | 0
Weighted-Average Interest Rate | 0.00% | [1] |
Senior Notes [Member] | 6.45% Notes Due 2014 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 249,988,000 |  | 249,971,000
Weighted-Average Interest Rate | 6.30% | [1] |
Debt Instrument, Face Amount | 250,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.45% |  |
Senior Notes [Member] | 5.65% Notes Due 2016 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 251,076,000 |  | 251,183,000
Weighted-Average Interest Rate | 5.70% | [1] |
Debt Instrument, Face Amount | 250,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.65% |  |
Senior Notes [Member] | 6.40% Notes Due 2018 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 258,829,000 |  | 259,346,000
Weighted-Average Interest Rate | 5.40% | [1] |
Debt Instrument, Face Amount | 250,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.40% |  |
Senior Notes [Member] | 6.55% Notes Due 2019 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 570,613,000 |  | 571,515,000
Weighted-Average Interest Rate | 5.70% | [1] |
Debt Instrument, Face Amount | 550,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.55% |  |
Senior Notes [Member] | 4.25% Notes Due 2021 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 556,988,000 |  | 557,213,000
Weighted-Average Interest Rate | 4.00% | [1] |
Debt Instrument, Face Amount | 550,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.25% |  |
Senior Notes [Member] | 6.40% Notes Due 2037 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 249,003,000 |  | 248,998,000
Weighted-Average Interest Rate | 6.40% | [1] |
Debt Instrument, Face Amount | 250,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.40% |  |
Senior Notes [Member] | 4.20% Notes Due 2042 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 248,384,000 |  | 248,377,000
Weighted-Average Interest Rate | 4.20% | [1] |
Debt Instrument, Face Amount | 250,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.20% |  |
Senior Notes [Member] | 5.15% Notes Due 2043 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Total debt | 556,395,000 |  | 298,684,000
Weighted-Average Interest Rate | 5.20% | [1] |
Debt Instrument, Face Amount | $ 550,000,000.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.15% |  |
[1] | Weighted-average interest rate includes the amortization/accretion of discounts and premiums and the amortization/accretion of gains and losses realized on historical cash flow and fair value hedges on interest expense.

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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