Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Summary of Changes in Balances for Each Component of Accumulated Other Comprehensive Income

The following table summarizes the changes in our balances of each component of accumulated other comprehensive income. 

	Three Months Ended March 31,			Three Months Ended March 31,
	2020			2019
	(in millions)
Currency translation adjustments:
Balance as of beginning of period	$	(6	)	$	(7	)
Currency translation adjustments		(2	)		—
Other comprehensive income (loss)		(2	)		—
Balance as of end of period	$	(8	)	$	(7	)
Employee benefit plans:
Balance as of beginning of period	$	11		$	14
Adoption of new accounting principle		—			3
Amortization of actuarial gain		—			(1	)
Other comprehensive income (loss)		—			(1	)
Balance as of end of period	$	11		$	16
Accumulated other comprehensive income
Balance as of beginning of period	$	5		$	7
Adoption of new accounting principle		—			3
Other comprehensive income (loss)		(2	)		(1	)
Balance as of end of period	$	3		$	9