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

(In Millions)

	Balance at Beginning of Period		Costs and Expenses(1)(2)		Deductions(3)			Other Items(4)(5)			Balance at End of Period
Allowance for doubtful accounts:
Year ended December 31, 2019	$	—	$	—	$	—		$	—		$	—
Year ended December 31, 2018	$	898	$	—	$	—		$	(898	)	$	—
Year ended December 31, 2017	$	1,031	$	1,434	$	(1,445	)	$	(122	)	$	898
Valuation allowance for deferred tax assets:
Year ended December 31, 2019	$	148	$	133	$	—		$	—		$	281
Year ended December 31, 2018	$	72	$	76	$	—		$	—		$	148
Year ended December 31, 2017	$	72	$	—	$	—		$	—		$	72

(1) Includes amounts recorded in discontinued operations.

(2) Before considering recoveries on accounts or notes previously written off.

(3) Accounts written off.

(4) Acquisition and divestiture activity in 2017.

(5)

Allowance for doubtful accounts eliminated in 2018 upon adoption of new accounting standard ASC 606.