Debt (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Debt
Other	$ 11	$ 34
Total debt	512	887
Less current portion	2	373
Long-term debt	510	514
6.5% interest payable semiannually on Senior Notes due on March 15, 2011 [Member]
Debt
Senior Notes	0	150
7.25% interest payable semiannually on Senior Notes due on May 1, 2011 [Member]
Debt
Senior Notes	0	201
5.65% interest payable semiannually on Senior Notes due on November 15, 2012 [Member]
Debt
Senior Notes	200	200
5.5% interest payable semiannually on Senior Notes due on November 19, 2012 [Member]
Debt
Senior Notes	150	151
6.125% interest payable semiannually on Senior Notes due on August 15, 2015 [Member]
Debt
Senior Notes	$ 151	$ 151

Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).

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-Publisher SEC

-Name Regulation S-X (SX)

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. 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, and after deducting unamortized discount or premiums, if any.

+ References

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- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

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