Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Ordinary Shares	Treasury Stock, at Cost	Capital in excess of par value	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive (Income) Loss	Equity Attributable to Noncontrolling Interest
Adoption of ASU	$ 17,447	$ 8	$ (1,119)	$ 16,865	$ 2,469		$ (776)
Adoption of ASU | Accounting Standards Update 2016-13						$ (4)
Beginning balance at Sep. 30, 2020	17,447	8	(1,119)	16,865	2,469		(776)
Beginning balance (Accounting Standards Update 2016-13) at Sep. 30, 2020						(4)
Other, including options exercised			(27)	52
Comprehensive income	723				451		272
Cash dividends - ordinary shares					(189)
Repurchases and retirements of ordinary shares	(346)	(1)			(345)
Ending balance at Dec. 31, 2020	17,656	$ 7	(1,146)	16,917	2,382		(504)
Beginning balance at Sep. 30, 2020								$ 1,086
Comprehensive income attributable to noncontrolling interests	81							81
Change in noncontrolling interest share								0
Ending balance at Dec. 31, 2020								1,167
Cash dividends, Ordinary, Per share		$ 0.26
Adoption of ASU	17,656	$ 7	(1,146)	16,917	2,382		(504)
Total Shareholders' Equity	18,823
Adoption of ASU	17,562	7	(1,152)	17,116	2,025		(434)
Adoption of ASU | Accounting Standards Update 2016-13						0
Total Shareholders' Equity	18,753
Beginning balance at Sep. 30, 2021	17,562	7	(1,152)	17,116	2,025		(434)
Beginning balance (Accounting Standards Update 2016-13) at Sep. 30, 2021						$ 0
Other, including options exercised			(47)	34
Comprehensive income	468				381		87
Cash dividends - ordinary shares					(242)
Repurchases and retirements of ordinary shares	(526)	0			(526)
Ending balance at Dec. 31, 2021	17,249	$ 7	(1,199)	17,150	1,638		(347)
Beginning balance at Sep. 30, 2021	1,191							1,191
Comprehensive income attributable to noncontrolling interests	43							43
Change in noncontrolling interest share								7
Ending balance at Dec. 31, 2021	1,241							$ 1,241
Cash dividends, Ordinary, Per share		$ 0.34
Adoption of ASU	17,249	$ 7	$ (1,199)	$ 17,150	$ 1,638		$ (347)
Total Shareholders' Equity	$ 18,490