Supplemental Equity and Comprehensive Income Information (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2011
Business Acquisitions Information
Cash paid for purchase and sale of subsidiary shares - net	$ 9	$ 33	$ 42
Winterthur Technologie AG
Business Acquisitions Information
Percentage of subsidiary share's owned by entity on the business acquisition date (as a percent)		86.00%
Percentage of subsidiary share's owned by entity as of latest balance sheet date (as a percent)			98.00%
Cash paid for purchase and sale of subsidiary shares - net			$ 50

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). Also includes the cash inflow related to the sale of subsidiary shares. These items are presented net.

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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company as of the latest balance sheet date.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section H

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