Debt	6 Months Ended
Jun. 30, 2012
Debt Disclosure [Abstract]
Debt	On June 30, 2012, we redeemed our $400 million, 4.625% notes (the 2012 Notes) that were due in October 2012. As a result of the early redemption of the 2012 Notes, we recorded a net charge of $2 million in other expense, net as a loss on the extinguishment of debt. The charge is comprised of a make-whole payment and a gain recognized upon the termination of interest rate swap contracts related to the 2012 Notes. In April 2012, we entered into forward starting swap agreements with an aggregate notional value of $150 million to hedge interest rate risk associated with the planned issuance of long-term debt before the end of the second quarter. We chose not to issue debt within the planned time period, and on June 29, 2012, the swap agreements expired and we recorded a loss of $6 million in other expense, net during the quarter ended June 30, 2012. In March 2012, we redeemed, at par plus accrued interest, a $150 million term loan that was scheduled to mature in the fourth quarter of 2012. During the quarter, commercial paper borrowings averaged $142 million at a weighted-average interest rate of 0.38% and the maximum amount outstanding at any time was $343 million. At June 30, 2012, there was no outstanding commercial paper borrowings.

On June 30, 2012, we redeemed our $400 million, 4.625% notes (the 2012 Notes) that were due in October 2012. As a result of the early redemption of the 2012 Notes, we recorded a net charge of $2 million in other expense, net as a loss on the extinguishment of debt. The charge is comprised of a make-whole payment and a gain recognized upon the termination of interest rate swap contracts related to the 2012 Notes.

In April 2012, we entered into forward starting swap agreements with an aggregate notional value of $150 million to hedge interest rate risk associated with the planned issuance of long-term debt before the end of the second quarter. We chose not to issue debt within the planned time period, and on June 29, 2012, the swap agreements expired and we recorded a loss of $6 million in other expense, net during the quarter ended June 30, 2012.

In March 2012, we redeemed, at par plus accrued interest, a $150 million term loan that was scheduled to mature in the fourth quarter of 2012.

During the quarter, commercial paper borrowings averaged $142 million at a weighted-average interest rate of 0.38% and the maximum amount outstanding at any time was $343 million. At June 30, 2012, there was no outstanding commercial paper borrowings.