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Fair Value Disclosure (Fair Value, by Balance Sheet Grouping) (Details) (USD $) In Millions	Jun. 30, 2011 Successor [Member] Carrying Amount [Member] Fair Value Inputs, Level 2 [Member]	Dec. 31, 2010 Predecessor [Member] Carrying Amount [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2010 Predecessor [Member] Carrying Amount [Member] Fair Value Inputs, Level 2 [Member]	Jun. 30, 2011 Successor [Member] Fair Value [Member] Fair Value Inputs, Level 2 [Member]	Dec. 31, 2010 Predecessor [Member] Fair Value [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2010 Predecessor [Member] Fair Value [Member] Fair Value Inputs, Level 2 [Member]
Investments, Fair Value Disclosure		$ 92			$ 92
Long-term notes, including the current maturities	$ 12,050		$ 11,583	$ 11,976		$ 12,480

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents notes payable as of the balance sheet date.

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