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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2011
Fair Value Measurements [Abstract] |
Assets and liabilities measured at fair value on recurring basis | The following tables present information about our assets and liabilities measured at fair value on a recurring basis as of September 30, 2011, and September 30, 2010, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.
| September 30, 2011 |  | Balance Sheet Classification
| Level 1 |  | Level 2 |  | Level 3 |  | Total |
Assets |  |  |  |  |  |  |  |  |
Cash equivalents | $ | 1,226.5 |  |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 1,226.5 |  |  | Cash and cash equivalents
Short-term marketable securities | 13.8 |  |  | 0.0 |  |  | 0.0 |  |  | 13.8 |  |  | Marketable securities
Long-term investments | 1.4 |  |  | 9.1 |  |  | 0.0 |  |  | 10.5 |  |  | Other assets
Total | $ | 1,241.7 |  |  | $ | 9.1 |  |  | $ | 0.0 |  |  | $ | 1,250.8 |  |  |
As a percentage of total assets | 10.5 | % |  | 0.1 | % |  | 0.0 | % |  | 10.6 | % |  |
Liabilities |  |  |  |  |  |  |  |  |
Mandatorily redeemable noncontrolling interests 1 | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 25.4 |  |  | $ | 25.4 |  |  |
| September 30, 2010 |  | Balance Sheet Classification
| Level 1 |  | Level 2 |  | Level 3 |  | Total |
Assets |  |  |  |  |  |  |  |  |
Cash equivalents | $ | 1,205.7 |  |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 1,205.7 |  |  | Cash and cash equivalents
Short-term marketable securities | 11.3 |  |  | 0.0 |  |  | 0.0 |  |  | 11.3 |  |  | Marketable securities
Long-term investments | 1.3 |  |  | 13.7 |  |  | 0.0 |  |  | 15.0 |  |  | Other assets
Foreign currency derivatives 2 | 0.0 |  |  | 0.0 |  |  | 0.2 |  |  | 0.2 |  |  | Other assets
Total | $ | 1,218.3 |  |  | $ | 13.7 |  |  | $ | 0.2 |  |  | $ | 1,232.2 |  |  |
As a percentage of total assets | 10.2 | % |  | 0.1 | % |  | 0.0 | % |  | 10.3 | % |  |
Liabilities |  |  |  |  |  |  |  |  |
Mandatorily redeemable noncontrolling interests 1 | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 48.1 |  |  | $ | 48.1 |  |  |
1 | Relates to unconditional obligations to purchase additional noncontrolling equity shares of consolidated subsidiaries. Fair value measurement of the obligation was based upon the amount payable as if the forward contracts were settled. The amount redeemable within the next twelve months is classified in accrued liabilities; any interests redeemable thereafter are classified in other non-current liabilities.
2 | Fair value is derived from changes in market value of obligations denominated in foreign currency based on an internal valuation model.
Assets and liabilities measured at fair value on recurring basis - level 3 reconciliation | The following tables present additional information about assets and liabilities measured at fair value on a recurring basis and for which we utilize Level 3 inputs to determine fair value.
| Three months ended September 30, 2011 |  | Three months ended September 30, 2010
| Liabilities |  | Assets |  | Liabilities
| Mandatorily redeemable noncontrolling interests |  | Foreign currency derivatives |  | Mandatorily redeemable noncontrolling interests
Balance at beginning of period | $ | 27.0 |  |  | $ | 0.3 |  |  | $ | 61.8 |
Level 3 additions | 0.3 |  |  | 0.0 |  |  | 2.1 |
Level 3 reductions | (2.0 | ) |  | 0.0 |  |  | (16.1 | )
Realized losses included in net income | (0.1 | ) |  | (0.1 | ) |  | (0.3 | )
Balance at end of period | $ | 25.4 |  |  | $ | 0.2 |  |  | $ | 48.1 |
| Nine months ended September 30, 2011 |  | Nine months ended September 30, 2010
| Liabilities |  | Assets |  | Liabilities
| Mandatorily redeemable noncontrolling interests |  | Foreign currency derivatives |  | Mandatorily redeemable noncontrolling interests
Balance at beginning of period | $ | 52.0 |  |  | $ | 0.6 |  |  | $ | 47.8 |
Level 3 additions | 0.8 |  |  | 0.0 |  |  | 2.1 |
Level 3 reductions | (28.0 | ) |  | 0.0 |  |  | (2.9 | )
Realized losses included in net income | (0.5 | ) |  | (0.4 | ) |  | (1.1 | )
Foreign currency translation | 0.1 |  |  | 0.0 |  |  | 0.0 |
Balance at end of period | $ | 25.4 |  |  | $ | 0.2 |  |  | $ | 48.1 |

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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 -Topic 820 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258 + Details
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