Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Preferred Stock [Member]	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, 2018		0	1,632,148,030
Total Stockholders' Equity at Dec. 31, 2018		$ 0	$ 16	$ (1,717)	$ 17,346	$ (6,953)	$ 33
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance (Shares)		0	0
Stock-based compensation (Shares)			10,340,881
Stock Issuance (Par value)		$ 0	$ 0
Treasury Stock, Value, Acquired, Cost Method				0
Preferred stock issuance (Value in excess of par)					0
Common stock issuance (Value in excess of par)					0
Stock-based compensation			$ 0		215
Net income (loss)	$ 4,700					4,700
Cumulative effect adjustment for adoption of ASC 2016-13						0
Preferred stock dividends						0
Ending Balance (Shares Issued) at Dec. 31, 2019		0	1,642,488,911
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	195						195
Net change in derivative financial instruments	62						62
Net change in defined benefit pensions and other items	20						(20)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2019	13,877	$ 0	$ 16	(1,717)	17,561	(2,253)	270
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance (Shares)		10,062,500	29,382,500
Stock-based compensation (Shares)			8,040,507
Stock Issuance (Par value)		$ 0	$ 0
Treasury Stock, Value, Acquired, Cost Method				(535)
Preferred stock issuance (Value in excess of par)					975
Common stock issuance (Value in excess of par)					975
Stock-based compensation			$ 0		221
Net income (loss)	(82)					(82)
Cumulative effect adjustment for adoption of ASC 2016-13	10					(10)
Preferred stock dividends						(33)
Ending Balance (Shares Issued) at Dec. 31, 2020		10,062,500	1,679,911,918
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	76						76
Net change in derivative financial instruments	(137)						(137)
Net change in defined benefit pensions and other items	1						(1)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2020	15,326	$ 0	$ 17	(2,251)	19,732	(2,378)	207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance (Shares)		0	0
Stock-based compensation (Shares)			8,898,134
Stock Issuance (Par value)		$ 0	$ 0
Treasury Stock, Value, Acquired, Cost Method				0
Preferred stock issuance (Value in excess of par)					0
Common stock issuance (Value in excess of par)					0
Stock-based compensation			$ 0		254
Net income (loss)	1,041					1,041
Cumulative effect adjustment for adoption of ASC 2016-13						0
Preferred stock dividends						(55)
Ending Balance (Shares Issued) at Dec. 31, 2021		10,062,500	1,688,810,052
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(125)						(125)
Net change in derivative financial instruments	170						170
Net change in defined benefit pensions and other items	(11)						11
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2021	$ 16,622	$ 0	$ 17	$ (2,251)	$ 19,986	$ (1,392)	$ 263