Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accounts receivable - customers, allowance for uncollectible accounts	$ 148	$ 70
Other receivables, allowance for uncollectible accounts	7	4
Non-utility property, accumulated depreciation	522	391
Intangible assets, accumulated amortization	228	126
CECONY
Accounts receivable - customers, allowance for uncollectible accounts	138	65
Other receivables, allowance for uncollectible accounts	4	3
Non-utility property, accumulated depreciation	$ 25	$ 25