SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

For the Years Ended December 31, 2019, 2018, and 2017

(in millions)

						Additions
	Balance  at Beginning of Period			Acquired/(Disposed) Balances		Charged (Credited)  to Costs and Expenses			Charged  to Other Accounts (1)			Deductions or Write-offs			Balance at End  of Period
Allowance for loss on receivables:
2019	$	79		$	—	$	(1	)	$	—		$	(9	)	$	69
2018	96			—		36			(29		)	(24		)	79
2017	118			—		20			(10		)	(32		)	96
Deferred tax asset valuation allowance:
2019	(54		)	—		9			—			—			(45		)
2018	(49		)	—		(5		)	—			—			(54		)
2017	(49		)	—		—			—			—			(49		)

(1)

Represents changes in retroactive membership adjustments to premiums revenue and contractual allowances adjustments to services revenue as more fully described in Note 2 to the consolidated financial statements included in this annual report on Form 10-K.