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      <Label>Derivative Instruments [Abstract]</Label>
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   &lt;div align="left" style="font-size: 10pt; margin-top: 12pt"&gt;&lt;b&gt;7. Derivative Instruments&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;We are exposed to market risk from changes in foreign currency and changes in interest rates.
   From time to time, we may enter into derivative financial instrument transactions to manage or
   reduce our market risk, but we do not enter into derivative transactions for speculative purposes.
   We manage our debt portfolio to achieve an overall desired position of fixed and floating rates and
   we may employ interest rate swaps as a tool to achieve that goal. The major risks from interest
   rate derivatives include changes in the interest rates affecting the fair value of such
   instruments, potential increases in interest expense due to market increases in floating interest
   rates and the creditworthiness of the counterparties in such transactions. In light of events in
   the global credit markets and the potential impact of these events on the liquidity of the banking
   industry, we continue to monitor the creditworthiness of our counterparties, which are
   multinational commercial banks.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The fair values of all our outstanding derivative instruments are determined using a model
   with Level 2 inputs including quoted market prices for contracts with similar terms and maturity
   dates.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;b&gt;&lt;i&gt;Interest Rate Swaps&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;We use interest rate swaps to help mitigate exposures related to interest rate movements.
   Amounts received upon termination of the swaps accounted for as fair value hedges represent the
   fair value of the agreements at the time of termination and are recorded as an adjustment to the
   carrying value of the related debt. These amounts are being amortized as a reduction to interest
   expense over the remaining term of the debt. We have no interest rate swaps outstanding at March
   31, 2010. As of March&amp;#160;31, 2010, we had net unamortized gains of $67&amp;#160;million, associated with
   interest rate swap terminations.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;b&gt;&lt;i&gt;Cash Flow Hedges&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;In 2008, we entered into interest rate derivative instruments to hedge projected exposures to
   interest rates in anticipation of a debt offering. Those hedges were terminated at the time of the
   issuance of the debt, and the loss on these hedges is being amortized from Accumulated Other
   Comprehensive Income to interest expense over the remaining term of the debt. As of March&amp;#160;31,
   2010, we had net unamortized losses of $13&amp;#160;million associated with our cash flow hedge
   terminations.
   &lt;/div&gt;
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   &lt;b&gt;
   &lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;b&gt;&lt;i&gt;Other Derivative Instruments&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;As of March&amp;#160;31, 2010, we had several foreign currency forward and option contracts with
       notional amounts aggregating to $620&amp;#160;million, which were entered into to hedge exposure to currency
       fluctuations in various foreign currencies, including, but not limited to, the British pound
       sterling, the Canadian dollar, the euro and the Norwegian krone. The total estimated fair value of
       these contracts at March&amp;#160;31, 2010 resulted in a net liability of approximately $8&amp;#160;million. These
       derivative instruments were not designated as hedges and the changes in fair value of the contracts
       are recorded each period in Other, Net in the accompanying Condensed Consolidated Statements of
       Income.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;We have cross-currency swaps between the U.S. dollar and Canadian dollar to hedge certain
       exposures to the Canadian dollar. At March&amp;#160;31, 2010, we had notional amounts outstanding of $335
   million. The total estimated fair value of these contracts at March&amp;#160;31, 2010 resulted in a
       liability of $33&amp;#160;million. These derivative instruments were not designated as hedges and the
       changes in fair value of the contracts are recorded each period in Other, Net in the accompanying
       Condensed Consolidated Statements of Income.
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;The fair values of outstanding derivative instruments are summarized as follows:
   &lt;/div&gt;
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   &lt;div style="margin-left:15px; text-indent:-15px"&gt;Derivative assets not
   designated as hedges:
   &lt;/div&gt;&lt;/td&gt;
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       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td align="left" valign="bottom"&gt;&amp;#160;&lt;/td&gt;
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   &lt;div style="margin-left:30px; text-indent:-15px"&gt;Foreign
   exchange contracts
   &lt;/div&gt;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td align="right"&gt;7,778&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td align="right"&gt;$&lt;/td&gt;
       &lt;td align="right"&gt;9,831&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td align="left" valign="bottom"&gt;Other Current Assets&lt;/td&gt;
   &lt;/tr&gt;
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       &lt;td&gt;
   &lt;div style="margin-left:15px; text-indent:-15px"&gt;Derivative liabilities not
   designated as hedges:
   &lt;/div&gt;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td align="left" valign="bottom"&gt;&amp;#160;&lt;/td&gt;
   &lt;/tr&gt;
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   &lt;div style="margin-left:30px; text-indent:-15px"&gt;Foreign
   exchange contracts
   &lt;/div&gt;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
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       &lt;td&gt;
   &lt;div style="margin-left:30px; text-indent:-15px"&gt;Cross-currency swap contracts
   &lt;/div&gt;&lt;/td&gt;
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       &lt;td align="right"&gt;33,293&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
       &lt;td&gt;&amp;#160;&lt;/td&gt;
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       &lt;td align="left" valign="bottom"&gt;Other Liabilities&lt;/td&gt;
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   &lt;/div&gt;
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 133
 -Paragraph 45

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 133
 -Paragraph 44

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