Medical Costs Payable (Tables)

12 Months Ended

Dec. 31, 2022

Insurance [Abstract]

Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]

The following table shows the components of the change in medical costs payable for the years ended December 31:

(in millions)	2022		2021		2020
Medical costs payable, beginning of period	$	24,483	$	21,872	$	21,690
Acquisitions	308		88		316
Reported medical costs:
Current year	211,252		188,631		160,276
Prior years	(410)		(1,720)		(880)
Total reported medical costs	210,842		186,911		159,396
Medical payments:
Payments for current year	(184,049)		(165,524)		(139,974)
Payments for prior years	(22,528)		(18,864)		(19,556)
Total medical payments	(206,577)		(184,388)		(159,530)
Medical costs payable, end of period	$	29,056	$	24,483	$	21,872

Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block]

The following is information about incurred and paid medical cost development as of December 31, 2022:

	Net Incurred Medical Costs
(in millions)	For the Years Ended December 31,
Year	2021		2022
2021	$	188,631	$	188,407
2022			211,252
Total			$	399,659
	Net Cumulative Medical Payments
(in millions)	For the Years Ended December 31,
Year	2021		2022
2021	$	(165,524)	$	(186,944)
2022			(184,049)
Total			(370,993)
Net remaining outstanding liabilities prior to 2021			390
Total medical costs payable			$	29,056