Unrecognized Tax Benefits - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2021	Jan. 01, 2020	Jan. 01, 2019
Income Tax Disclosure [Abstract]
Unrecognized tax benefit — Permanent tax positions	$ 23	$ 21
Unrecognized tax benefit — Temporary tax positions	3	3
Total unrecognized tax benefit	26	24	$ 20	$ 24	$ 20	$ 17
Additions based on tax positions related to the current year	2	2	3
Reductions based on tax positions related to the current year	0	0	(1)
Additions for tax positions of prior years	0	16	1
Reductions for tax positions of prior years	0	(14)	0
NOL and tax credit carryforwards	(13)	(11)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	14
Unrecognized Tax Benefits, Income Tax Penalties Expense	0	0	0
Payable for interest related to unrecognized tax benefits at Jan. 1	(2)	(2)	(2)	$ (2)	$ (2)	$ (1)
Interest expense related to unrecognized tax benefits	$ 0	$ 0	$ (1)