Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Accounts receivable - customers, allowance for uncollectible accounts	$ 88	$ 96
Other receivables, allowance for uncollectible accounts	11	10
Non-utility property, accumulated depreciation	90	91
Intangible assets, accumulated amortization	4	4
CECONY
Accounts receivable - customers, allowance for uncollectible accounts	83	90
Other receivables, allowance for uncollectible accounts	8	8
Non-utility property, accumulated depreciation	$ 25	$ 25