Redeemable Noncontrolling Interest (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Redeemable Noncontrolling Interest
Percentage interest in joint venture (TPDI) that is held by an unaffiliated party (Quantum)	50.00%
Redeemable noncontrolling interest
Balance, beginning of period	$ 25
Reclassification from noncontrolling interest		26
Net income attributable to noncontrolling interest	94	13
Other comprehensive loss attributable to noncontrolling interest	(3)	(14)
Balance, end of period	$ 116	$ 25

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As of the reporting date, the carrying amount of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity.

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No definition available.

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- Definition

Change in noncontrolling interest during the period related to net income attributable to the noncontrolling interest.

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No definition available.

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- Definition

Change in noncontrolling interest during the period related to other comprehensive income attributable to the noncontrolling interest.

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No definition available.

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- Definition

Change in noncontrolling interest during the period as a result of a reclassification from noncontrolling interests to temporary equity.

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No definition available.

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- Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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