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Long-term Debt (Details) (USD $) In Millions, except Share data, unless otherwise specified | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2012 | Mar. 02, 2012 | Dec. 31, 2011
Debt Instrument |  |  |  |  |
Total long-term debt | $ 1,480.2 |  |  | $ 1,615.7 |
Less: current portion | 217.1 | [1] |  | 404.8 | [1]
Long-term debt, excluding current portion | 1,263.1 |  |  | 1,210.9 |
6.25% Senior Unsecured Notes due 2014 |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective Interest Rate | 6.29% |  |  |  |
Book Value | 353.1 |  |  | 354.3 |
Fair Value | 379.8 | [2] |  | 374.5 |
Stated Interest Rate | 6.25% |  |  |  |
Debt Maturity Date | Nov. 15, 2014 |  |  |  |
Unamortized Discount | 0.2 |  |  |  |
10.00% Senior Unsecured Notes due 2017 |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective Interest Rate | 10.38% |  |  |  |
Book Value | 591.6 |  |  | 590.6 |
Fair Value | 672.0 | [2] |  | 690.0 |
Stated Interest Rate | 10.00% |  |  |  |
Debt Maturity Date | Jul. 15, 2017 |  |  |  |
Unamortized Discount | 8.4 |  |  |  |
4.00% Senior Notes due 2022 |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective Interest Rate | 4.13% |  |  |  |
Book Value | 247.0 |  |  | 0 |
Fair Value | 261.0 | [2] | 246.8 | 0 |
Stated Interest Rate | 4.00% |  |  |  |
Debt Maturity Date | Mar. 15, 2022 |  |  |  |
Unamortized Discount | 3.0 |  | 3.2 |  |
4.00% Notes, Face Value | 250.0 |  |  |  |
4.00% Notes, Frequency of Periodic Payment | semi-annually |  |  |  |
4.00% Notes, Date of First Required Payment | Sep. 15, 2012 |  |  |  |
4.00% Notes, Capitalized Direct Fees | 2.5 |  |  |  |
4.00% Notes, Repurchase price percentage due to change of control | 101.00% |  |  |  |
4.75% Convertible Senior Notes due 2023 |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective Interest Rate | 3.50% |  |  |  |
Book Value | 201.0 |  |  | 202.7 |
Fair Value | 220.7 | [2] |  | 220.5 |
Stated Interest Rate | 4.75% |  |  |  |
Debt Maturity Date | Mar. 15, 2023 |  |  |  |
Unamortized Premium | 1.0 |  |  |  |
Repurchase of convertible notes for cash, date | Mar. 15, 2013 |  |  |  |
Conversion ratio before adjustment for dividends | 82.4612 |  |  |  |
Current conversion ratio | 83.3669 |  |  |  |
Conversion price before adjustment for dividends | $ 12.13 |  |  |  |
Current conversion price | $ 12.00 |  |  |  |
Capped call, shares that may be purchased | 16,700,000 |  |  |  |
Capped call, strike price | $ 12.00 |  |  |  |
Capped call, strike price before adjustment | $ 12.13 |  |  |  |
Capped call, cap price | $ 17.64 |  |  |  |
Capped call, cap price before adjustment | $ 17.83 |  |  |  |
4.25% Convertible Senior Notes due 2023 |  |  |  |  |
Debt Instrument |  |  |  |  |
Book Value | 0 |  |  | 403.0 |
Fair Value | 0 | [2] |  | 405.5 |
Stated Interest Rate | 4.25% |  |  |  |
Debt Maturity Date | Mar. 15, 2023 |  |  |  |
4.25% Notes, Amount Retired | 400.0 |  |  |  |
4.25% Notes, Amount Retired for Cash | 399.6 |  |  |  |
4.25% Notes Retirement, Accrued Interest Paid | 0.5 |  |  |  |
Conversion of 4.25% Notes, Amount | 0.4 |  |  |  |
Conversion of 4.25% Notes, Shares Issued | 30,000 |  |  |  |
4.25% Notes, Incremental Common Shares if Converted | 33,000,000 |  |  |  |
Current conversion ratio | 82.4612 |  |  |  |
Other notes payable and capitalized leases |  |  |  |  |
Debt Instrument |  |  |  |  |
Book Value | 87.5 |  |  | 65.1 |
Fair Value | $ 84.0 | [2] |  |  |
[1] | On March 15, 2013, holders of our 4.75% Convertible Senior Notes due 2023 (the “4.75% Notes”) may require us to repurchase their notes for cash at par, and accordingly, we included these notes in the current portion of long-term debt on our September 30, 2012 unaudited Consolidated Balance Sheet. The 4.75% Notes are also redeemable in whole or in part at our option beginning March 15, 2013. Any 4.75% Notes neither repurchased on March 15, 2013 nor called for redemption by us will be reclassified to long-term debt. We included our 4.25% Convertible Senior Notes due 2023 (the “4.25% Notes”) in the current portion of long-term debt on our December 31, 2011 Consolidated Balance Sheet because holders of the 4.25% Notes had a repurchase option on March 15, 2012 for cash at par. The 4.25% Notes were retired in the first quarter of 2012.
[2] | See Note 11 for information on the fair value measurement of our long-term debt.

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- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract. + References No definition available. + Details
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- Definition The strike price on the price risk option contract such as a put option or a call option. + References No definition available. + Details
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- Definition Gross amount of debt extinguished. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1930-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 26, 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 5: 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 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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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. 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 FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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