Consolidated Balance Sheets (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts receivable, allowance	$ 70	$ 58
Common stock, par value	$ 0.10	$ 0.10
Common stock, authorized	1,000	1,000
Common stock, outstanding	378	380