CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Accounts receivable, allowance (dollars)	$ 39	$ 43
Customer relationships, accumulated amortization	2,179	2,012
Other intangible assets, accumulated amortization	$ 1,043	$ 994
Common stock, share outstanding (in shares)	1	1