Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Shares, Issued at Dec. 31, 2020		10,062,500	1,679,911,918
Total stockholders' equity at Dec. 31, 2020		$ 0	$ 17	$ (2,251)	$ 19,732	$ (2,378)	$ 207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance (Par value)		$ 0	$ 0
Stock-based compensation (Shares)			3,949,308
Treasury Stock, Value, Acquired, Cost Method				0
Stock-based compensation			$ 0		19
Net income (loss)	$ 341					341
Preferred stock dividends						(14)
Total other comprehensive income (loss)	47						47
Ending Balance (Shares Issued) at Mar. 31, 2021		10,062,500
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Mar. 31, 2021	$ 15,719	$ 0	$ 17	(2,251)	19,750	(2,050)	254
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Issued	1,683,861,226
Common Stock, Shares, Issued	1,688,810,052
Shares, Issued at Dec. 31, 2021		10,062,500	1,688,810,052
Total stockholders' equity at Dec. 31, 2021	$ 16,622	$ 0	$ 17	(2,251)	19,986	(1,392)	263
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance (Par value)		$ 0	$ 0
Stock-based compensation (Shares)			4,018,935
Treasury Stock, Value, Acquired, Cost Method				0
Stock-based compensation			$ 0		57
Net income (loss)	110					110
Preferred stock dividends						(14)
Total other comprehensive income (loss)	(41)						(41)
Ending Balance (Shares Issued) at Mar. 31, 2022		10,062,500
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Mar. 31, 2022	$ 16,735	$ 0	$ 17	$ (2,251)	$ 20,043	$ (1,296)	$ 222
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Issued	1,692,828,987