Income Taxes - Schedule of Net Operating Loss (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Uncertain tax positions	$ (1,375)	$ (1,474)	$ (1,538)
Federal
Operating Loss Carryforwards [Line Items]
NOLs per return	7,361
Uncertain tax positions	(4,457)
Financial NOLs	2,904
Federal | Tax Year 2026
Operating Loss Carryforwards [Line Items]
NOLs per return	741
Federal | Tax Year 2027
Operating Loss Carryforwards [Line Items]
NOLs per return	375
Federal | Tax Year 2028
Operating Loss Carryforwards [Line Items]
NOLs per return	637
Federal | Tax Year 2029
Operating Loss Carryforwards [Line Items]
NOLs per return	645
Federal | Tax Year 2030
Operating Loss Carryforwards [Line Items]
NOLs per return	668
Federal | Tax Year 2031
Operating Loss Carryforwards [Line Items]
NOLs per return	238
Federal | Tax Year 2032
Operating Loss Carryforwards [Line Items]
NOLs per return	2,976
Federal | Tax Year 2033
Operating Loss Carryforwards [Line Items]
NOLs per return	733
Federal | Tax Year 2037
Operating Loss Carryforwards [Line Items]
NOLs per return	$ 348