Long-Term Debt Tender Offer (Details)
 0 Months Ended 3 Months Ended
May 22, 2013
May 14, 2013
Apr. 30, 2013
Aug. 03, 2013
Debt Instruments [Abstract]        
Debt Instrument, Redemption, Description   On May 14, 2013, we announced that we had amended our previously announced Tender Offer (Amended Tender Offer) and related solicitation of consents to extend the expiration date of the consent solicitation and to increase the tender consideration. The Amended Tender Offer increased the total consideration from $1,350 to $1,450 per $1,000 principal amount of the Notes (Amended Tender Offer Consideration); extended the expiration date of the consent solicitation from May 13, 2013 to May 20, 2013 (Consent Expiration) and extended the expiration of the tender offer from May 28, 2013 to June 4, 2013 (Expiration Time) On April 30, 2013 we announced the commencement of a cash tender offer (Tender Offer) and consent solicitation for our 7.125% Debentures Due 2023 (Notes) for total consideration consisting of an amount equal to $1,350 per $1,000 principal amount of Notes, including a consent payment in the amount equal to $50 per $1,000 principal amount of Notes. We solicited consents to effect certain proposed amendments to the indenture, as amended and supplemented, governing the Notes (the Indenture) that would eliminate most of the restrictive covenants and certain events of default and other provisions in the Indenture (Proposed Amendments). Holders that validly tendered their Notes prior to the Consent Expiration, as extended, received the Amended Tender Offer Consideration. Holders that validly tendered their Notes after the Consent Expiration, as extended, but prior to the Expiration Time, as extended, received only the tender offer consideration of $1,400 per $1,000 principal amount of the Notes (Tender Offer Consideration). Holders whose Notes were accepted for purchase in the Amended Tender Offer also received accrued and unpaid interest to, but not including, the applicable payment date for the Notes.
Debt Instrument, Redemption Period, Start Date     Apr. 30, 2013  
Debt Instrument, Redemption Period, End Date       Jun. 04, 2013
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed 95.41%