Consolidated Statements of Shareholders' Equity (Parentheticals) - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Treasury shares held in trust (in shares)			1	1	1
Treasury shares held in trust			$ 29	$ 29	$ 29
Common stock			18	17	17
Reduction to retained earnings as a result of new accounting standard adoption		$ (64,170)	(71,315)	(75,381)	(69,701)
Accounting Standards Update [Extensible List]		ASU 2016-13
Retained Earnings
Reduction to retained earnings as a result of new accounting standard adoption		$ (45,108)	$ (56,145)	$ (54,906)	$ (49,640)
Cumulative Effect, Period of Adoption, Adjustment
Reduction to retained earnings as a result of new accounting standard adoption	[1]	3
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings
Reduction to retained earnings as a result of new accounting standard adoption	[1]	3
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings | ASU 2016-13
Reduction to retained earnings as a result of new accounting standard adoption		$ 3

[1] Reflects the adoption of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses (Topic 326), which resulted in a reduction to retained earnings of $3 million during the year ended December 31, 2020.