Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2022	Jun. 30, 2021
Income Taxes
Income Tax Expense (Benefit)	$ (1,022)	$ (203)	$ (925)	$ (613)
Goodwill, Impairment Loss			1,307
Unrecognized tax benefits	937		937			$ 932
Unrecognized tax benefits that would impact effective tax rate	854		854			849
Unrecognized tax benefits, interest and penalties accrued	$ 45		$ 45			49
Effective Income Tax Rate Reconciliation, Percent	105.00%	(47.60%)	153.10%	259.70%
Deferred income taxes and other liabilities	$ 9,607		$ 9,607			9,670
Cordis Divestiture
Income Taxes
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	10		19
Medical Unit Goodwill Impairment [Member]
Income Taxes
Income Tax Expense (Benefit)			(1,000)
Forecast [Member] | Cordis Divestiture
Income Taxes
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation					$ 38
Forecast [Member] | Medical Unit Goodwill Impairment [Member]
Income Taxes
Income Tax Expense (Benefit)					$ (92)
Net Operating Loss Carryback [Member]
Income Taxes
Income Tax Expense (Benefit)		$ (420)
Deferred income taxes and other liabilities		700		$ 700
Income Taxes Receivable	974		974
Minimum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	0		0
Maximum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	20		20
Patient Recovery Business
Income Taxes
Indemnification Receivable	3		3			12
CareFusion [Member]
Income Taxes
Indemnification Receivable	72		72			72
Total Opioid Litigation [Member]
Income Taxes
Estimated Litigation Liability	$ 6,680		6,680
Income Tax Expense (Benefit)			$ 0	(300)		(228)
Unrecognized tax benefits that would impact effective tax rate		$ 34		34		$ 219
Litigation Settlement, Expense				$ 1,020