CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Accounts receivable, allowance (dollars)	$ 48	$ 47
Other intangible assets, accumulated amortization	$ 1,435	$ 1,383
Common stock, shares, issued (in shares)	1	1
Common stock, share outstanding (in shares)	1	1
Common stock, value outstanding	$ 10,050	$ 10,050
Customer relationships
Customer relationships, accumulated amortization	$ 3,549	$ 3,264