Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Schedule II - Valuation and Qualifying Accounts

Comcast Corporation

Schedule II – Valuation and Qualifying Accounts

Year ended December 31, 2019, 2018 and 2017



Year ended December 31 (in millions)	Balance at Beginning of Year			Additions Charged to Costs and Expenses			Deductions from Reserves			Balance at End of Year
2019
Allowance for doubtful accounts	$	352		$	769		$	702		$	419
Valuation allowance on deferred tax assets	632			1,403			129			1,906
2018
Allowance for doubtful accounts	$	288		$	616		$	552		$	352
Valuation allowance on deferred tax assets	377			367			112			632
2017
Allowance for doubtful accounts	$	250		$	554		$	516		$	288
Valuation allowance on deferred tax assets	266			111			—			377

NBCUniversal Media LLC [Member]

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Schedule II - Valuation and Qualifying Accounts

NBCUniversal Media, LLC

Schedule II – Valuation and Qualifying Accounts

Year ended December 31, 2019, 2018 and 2017



Year ended December 31 (in millions)	Balance at Beginning of Year			Additions Charged to Costs and Expenses			Deductions from Reserves			Balance at End of Year
2019
Allowance for doubtful accounts	$	99		$	48		$	47		$	100
Valuation allowance on deferred tax assets	73			36			15			94
2018
Allowance for doubtful accounts	$	88		$	32		$	21		$	99
Valuation allowance on deferred tax assets	87			13			27			73
2017
Allowance for doubtful accounts	$	84		$	23		$	19		$	88
Valuation allowance on deferred tax assets	72			15			—			87