Stock-Based Compensation and Stockholders' Equity - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended
	Oct. 01, 2020	Jun. 19, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, price per share (in dollars per share)		$ 39.00
Sale of stock, consideration received on transaction		$ 772,000,000
Payments of stock issuance costs		$ 35,000,000
Stock-based compensation expense			$ 45,000,000	$ 4,000,000	$ 55,000,000	$ 16,000,000
Exercise of stock options (in shares)					26,900
Options outstanding (in shares)			220,432		220,432
Options exercisable (in shares)			104,257		104,257
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, shares issued in transaction (in shares)	35,650,000
Sale of stock, price per share (in dollars per share)	$ 56.00
Sale of stock, consideration received on transaction	$ 1,900,000,000
Payments of stock issuance costs	$ 50,000,000
Public Stock Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, shares issued in transaction (in shares)		20,700,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, fair value			$ 42,000,000		$ 59,000,000
Granted (in shares)					1,222,736
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition					1 year 8 months 12 days
Vested (in shares)					(1,068,509)
Unrecognized compensation expense			103,000,000		$ 103,000,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, aggregate intrinsic value, nonvested			7,000,000		7,000,000
Market-based Stock Units (MSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, aggregate intrinsic value, nonvested			$ 13,000,000		$ 13,000,000
Granted (in shares)			185,639		185,639
Award vesting period			3 years
Vested (in shares)					(61,322)
Market-based Stock Units (MSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage			0.00%
Market-based Stock Units (MSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage			200.00%
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount							$ 150,000,000
Treasury stock (in shares)			223,823		223,823
Common stock acquired value					$ 9,000,000
Common stock acquired average price per share (in dollars per share)					$ 40.80
Common stock shares acquired (in shares)					0	0