Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Billions	1 Months Ended	3 Months Ended	12 Months Ended
	Sep. 30, 2008	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Mar. 31, 2024	Sep. 07, 2008
Class of Stock [Line Items]
Increase in net worth		$ 4.0
Proceeds from issuance of common stock			$ 70.0
Common stock, shares outstanding (in shares)		1,158,087,567	1,158,087,567	1,158,087,567
Incremental common shares attributable to dilutive effect of conversion of preferred stock (in shares)			26,000,000	26,000,000	26,000,000
Weighted average number of shares, contingently issuable (in shares)			4,700,000,000	4,700,000,000	4,700,000,000
Series 2008-2 Senior Preferred Stock
Class of Stock [Line Items]
Senior preferred stock authorized (in shares)		1,000,000	1,000,000	1,000,000
Senior preferred stock outstanding (in shares)		1,000,000	1,000,000	1,000,000
Senior preferred stock issued (in shares)		1,000,000	1,000,000	1,000,000
Senior preferred stock, stated value per share (in dollars per share)		$ 1,000	$ 1,000
Aggregate liquidation preference of senior preferred stock		$ 1.0	$ 1.0
Convertible Series 2004-1
Class of Stock [Line Items]
Preferred stock, redemption price (in dollars per share)		$ 105,000	$ 105,000
Conversion price per share (in dollars per share)		$ 94.31	$ 94.31
Conversion rate		1,060.3329	1,060.3329
Minimum
Class of Stock [Line Items]
Percentage of Then-current liquidation preference of senior preferred stock		10.00%	10.00%
Minimum | Series O
Class of Stock [Line Items]
Preferred stock, redemption price (in dollars per share)		$ 50	$ 50
Maximum
Class of Stock [Line Items]
Percentage of Then-current liquidation preference of senior preferred stock		12.00%	12.00%
Maximum | Series O
Class of Stock [Line Items]
Preferred stock, redemption price (in dollars per share)		$ 52.50	$ 52.50
US Treasury
Class of Stock [Line Items]
Aggregate liquidation preference of senior preferred stock		$ 195.2	$ 195.2
Aggregate funding received from US Treasury pursuant to the senior preferred stock purchase agreement		$ 119.8	$ 119.8
Common stock warrant exercise price (in dollars per share)	$ 0.00001
Percentage of common shares attributable to warrants	79.90%						79.90%
Fair value of the warrant at issuance	$ 3.5
Forecast | US Treasury
Class of Stock [Line Items]
Aggregate liquidation preference of senior preferred stock						$ 199.2