Business Combinations (Narrative) (Details) (Indura [Member]) In Millions, unless otherwise specified	6 Months Ended	9 Months Ended
Mar. 31, 2013 USD ($)	Jul. 03, 2012 USD ($)	Jul. 03, 2012 CLP	Jul. 02, 2012
Business Acquisition [Line Items]
Percentage of shares purchased		13.00%	13.00%	51.80%
Percentage of results consolidated		100.00%	100.00%
Cash consideration		$ 690	345,500
Acquired debt		227	113,800
Agreement to purchase additional equity interest under put option		30.50%	30.50%
Put option exercise period start date		1 July 2015	1 July 2015
Put option exercise period beginning 1 July 2015		2 years	2 years
Percentage ownership to be purchased	2.00%	2.00%	2.00%
Liability related to purchase of shares from noncontrolling interests	$ 11

Shareholder has right to exercise a put option to require the purchase of additional equity interest of this percentage

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- Definition

Percentage of subsidiary's or equity investee's stock to be purchased by parent company as required by a purchase agreement.

+ References

No definition available.

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- Definition

Liability related to purchase of shares from noncontrolling interests

+ References

No definition available.

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- Definition

Perecentage of results consolidated

+ References

No definition available.

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- Definition

Start date of period during which put option may be exercised.

+ References

No definition available.

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Number of years during which put option can be exercised

+ References

No definition available.

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- Definition

Amount of cash paid to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 805

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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