CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Other intangible assets, accumulated amortization	$ 1,384	$ 1,247
Accounts receivable, allowance (dollars)	$ 49	$ 38
Common stock, shares, issued (in shares)	1	1
Common stock, share outstanding (in shares)	1	1
Customer Relationships
Accumulated amortization	$ 3,117	$ 2,660