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Derivatives and Hedging Activities (Details Textual) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |  |  |  |  | 6 Months Ended | 12 Months Ended |  |  | 3 Months Ended | 6 Months Ended
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Dec. 31, 2011 InterestRateAndCurrencySwap ForeignExchangeOption | Jun. 30, 2012 InterestRateAndCurrencySwap ForeignExchangeOption | Jun. 30, 2012 12% Senior Notes due February 2014 [Member] | Dec. 31, 2011 12% Senior Notes due February 2014 [Member] | Jun. 30, 2012 5.625 % Senior Notes due July 2013 [Member] | Dec. 31, 2011 5.625 % Senior Notes due July 2013 [Member] | Jun. 30, 2012 Interest Rate Swap [Member] | Dec. 31, 2011 Interest Rate Swap [Member] | Jun. 30, 2012 Foreign Exchange Forward [Member] | Dec. 31, 2011 Foreign Exchange Forward [Member] | Jun. 30, 2012 Designated as Hedging Instrument [Member] | Dec. 31, 2011 Designated as Hedging Instrument [Member] | Jun. 30, 2011 Designated as Hedging Instrument [Member] | Jun. 30, 2012 Designated as Hedging Instrument [Member] | Jun. 30, 2011 Designated as Hedging Instrument [Member]
Derivatives And Hedging Activities (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mark to market adjustment to record Increase or decrease in the carrying amount of the 12% and 5.625% Senior Notes |  |  |  |  |  |  | $ 2 | $ 2 |  |  |  |  |  |  |
Increase (decrease) in interest expense due to interest rate swap |  |  |  |  |  |  |  |  |  |  | (0.2) | (1.0) | (1.0) | (0.5) | (2.0)
Increase (decrease) in carrying value due to interest rate swap |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |
Estimated fair value of foreign currency forward contract, asset |  |  |  |  |  |  |  |  | 55 | 15 |  |  |  |  |
Derivatives and Hedging Activities (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on senior notes |  |  | 12.00% | 12.00% | 5.625% | 5.625% |  |  |  |  |  |  |  |  |
Terminated an interest rate swap with notional amount interest rate swaps | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum original maturity period of Foreign Currency Forward Contracts |  | 12 months |  |  |  |  |  |  |  |  |  |  |  |  |
Number of foreign exchange options outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of interest rate and Currency swap agreements outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Increase decrease in carrying value resulting from interest rate swap. + References No definition available. + Details
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- Definition Increase decrease in interest expense resulting from interest rate swap. + References No definition available. + Details
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- Definition Number of foreign exchange options outstanding. + References No definition available. + Details
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- Definition Number of interest rate and Currency swap agreements outstanding. + References No definition available. + Details
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- Definition Terminated an interest rate swap with notional amount interest rate swaps. + References No definition available. + Details
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- Definition Interest rate stated in the contractual 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 Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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