Financial Investments Included in Other Assets (Details) (USD $) In Millions	6 Months Ended	12 Months Ended
Jun. 30, 2011	Dec. 31, 2010
Financial investments included in other assets
Total recurring investments	$ 22	$ 62
Total non-recurring investments	110	119
Total	132	181
Company's investments in available-for-sale securities
Cost Basis	19	22
Pre-tax Unrealized Gains	3	40
Pre-tax Unrealized Losses	0	0
Recorded Basis	22	62
Auction rate securities [Member]
Financial investments included in other assets
Total recurring investments	22	22
Trimas Corporation Common Stock [Member]
Financial investments included in other assets
Total recurring investments	0	40
Private Equity Funds [Member]
Financial investments included in other assets
Total non-recurring investments	101	106
Other investments [Member]
Financial investments included in other assets
Total non-recurring investments	$ 9	$ 13

Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities and which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer. Such securities are reported at fair value; unrealized gains and losses related to Available-for-sale securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.

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This item represents the gross unrealized losses for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.

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