XML 32 R6.htm IDEA: XBRL DOCUMENT

Consolidated Balance Sheets Balance Sheet Parentheticals (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$ 51	$ 54
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 641	$ 772

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details