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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2013
Fair Value Disclosures [Abstract] |
Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments | Carrying amounts and estimated fair values of financial instruments as of the dates indicated were as follows (in millions):
| March 31, 2013 |  | December 31, 2012
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Assets: |  |  |  |  |  |  |
Cash surrender value of life insurance policies | $ | 12.8 |  |  | $ | 12.8 |  |  | $ | 11.9 |  |  | $ | 11.9 |
Auction rate securities | 14.8 |  |  | 14.8 |  |  | 14.4 |  |  | 14.4 |
Liabilities: |  |  |  |  |  |  |
Deferred compensation plan liabilities | $ | 3.9 |  |  | $ | 3.9 |  |  | $ | 3.3 |  |  | $ | 3.3 |
Acquisition-related contingent consideration | 142.6 |  |  | 142.6 |  |  | 143.6 |  |  | 143.6 |
4.875% senior notes | 400.0 |  |  | 397.0 |  |  | — |  |  | — |
7.625% senior notes | — |  |  | — |  |  | 150.0 |  |  | 154.9 |
Original 4.0% Notes | 9.6 |  |  | 18.1 |  |  | 9.7 |  |  | 15.9 |
Original 4.25% Notes | 3.0 |  |  | 5.8 |  |  | 3.0 |  |  | 5.1 |
New 4.0% Notes | 101.6 |  |  | 103.4 |  |  | 100.9 |  |  | 101.5 |
New 4.25% Notes | 92.7 |  |  | 94.8 |  |  | 92.1 |  |  | 92.7 |
Schedule Of Fair Values Of Financial Assets And Liabilities Measured On A Recurring Basis | The fair values of financial assets and liabilities measured on a recurring basis were determined using the following inputs as of the dates indicated (in millions):
|  |  | Fair Value Measurements Using Inputs Considered as Significant
| Fair Value as of March 31, 2013 |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |
Cash surrender value of life insurance policies | $ | 12.8 |  |  | $ | 12.8 |  |  | — |  |  | — |
Auction rate securities | $ | 14.8 |  |  | — |  |  | — |  |  | $ | 14.8 |
Liabilities |  |  |  |  |  |  |
Deferred compensation plan liabilities | $ | 3.9 |  |  | $ | 3.9 |  |  | — |  |  | — |
Acquisition-related contingent consideration | $ | 142.6 |  |  | — |  |  | — |  |  | $ | 142.6 |
|  |  | Fair Value Measurements Using Inputs Considered as Significant
| Fair Value as of December 31, 2012 |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |
Cash surrender value of life insurance policies | $ | 11.9 |  |  | $ | 11.9 |  |  | — |  |  | — |
Auction rate securities | $ | 14.4 |  |  | — |  |  | — |  |  | $ | 14.4 |
Liabilities |  |  |  |  |  |  |
Deferred compensation plan liabilities | $ | 3.3 |  |  | $ | 3.3 |  |  | — |  |  | — |
Acquisition-related contingent consideration | $ | 143.6 |  |  | — |  |  | — |  |  | $ | 143.6 |
Reconciliation Of Assets And Liabilities Measured At Fair Value On A Recurring Basis, Level 3 | The following tables, which may contain summation differences due to rounding, provide a reconciliation between the beginning and ending balances of items measured at fair value on a recurring basis using significant unobservable inputs for the periods indicated (in millions):
| Auction Rate Securities
Assets | Student Loan |  | Structured Finance Securities |  | Total
Balance as of December 31, 2011 | $ | 11.8 |  |  | $ | 1.7 |  |  | $ | 13.5 |
Changes in fair value recorded in earnings | — |  |  | — |  |  | — |
Unrealized gains included in other comprehensive income | $ | 0.2 |  |  | $ | 0.3 |  |  | $ | 0.5 |
Balance as of March 31, 2012 | $ | 12.0 |  |  | $ | 2.0 |  |  | $ | 14.0 |
Balance as of December 31, 2012 | $ | 11.7 |  |  | $ | 2.7 |  |  | $ | 14.4 |
Changes in fair value recorded in earnings | — |  |  | — |  |  | — |
Unrealized gains included in other comprehensive income | — |  |  | 0.4 |  |  | 0.4 |
Balance as of March 31, 2013 | $ | 11.7 |  |  | $ | 3.0 |  |  | $ | 14.8 |
Liabilities | Acquisition-Related Contingent Consideration |  |  |  |
Balance as of December 31, 2011 | $ | 79.3 |  |  |  |  |
Payments of contingent consideration | — |  |  |  |  |
Valuation gains (losses) recorded in earnings | — |  |  |  |  |
Balance as of March 31, 2012 | $ | 79.3 |  |  |  |  |
Balance as of December 31, 2012 | $ | 143.6 |  |  |  |  |
Payments of contingent consideration | (0.6 | ) |  |  |  |
Valuation gains (losses) recorded in earnings | — |  |  |  |  |
Currency translation adjustments included in other comprehensive income | (0.4 | ) |  |  |  |
Balance as of March 31, 2013 | $ | 142.6 |  |  |  |  |

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 14 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph c(2), d, e, f -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 FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15 -Subparagraph b-d -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13467-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 19 -Subparagraph a, b, c(1), d(1) -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph a, c(1), c(2), c(3), d -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 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 -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 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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