Goodwill, Other Intangibles, and Property and Equipment - Goodwill Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Balance at January 1	$ 45,811	$ 44,648
Goodwill acquired		1,438
Goodwill disposed	(234)	(10)
Impact of foreign currency translation and other adjustments	0	(31)
Balance at December 31, including held for sale assets		46,045
Balance at December 31	45,811	45,811
Goodwill classified as Assets of businesses held for sale		234
Evernorth Health Services
Goodwill [Roll Forward]
Balance at January 1		33,806
Goodwill acquired		1,322
Goodwill disposed	0	0
Impact of foreign currency translation and other adjustments	2	0
Balance at December 31, including held for sale assets		35,128
Balance at December 31	35,130
Cigna Healthcare
Goodwill [Roll Forward]
Balance at January 1		10,577
Goodwill acquired		116
Goodwill disposed	0	(10)
Impact of foreign currency translation and other adjustments	(2)	0
Balance at December 31, including held for sale assets		10,683
Balance at December 31	10,681
Other Operations
Goodwill [Roll Forward]
Balance at January 1		265
Goodwill acquired		0
Goodwill disposed	(234)	0
Impact of foreign currency translation and other adjustments	0	(31)
Balance at December 31, including held for sale assets		$ 234
Balance at December 31	$ 0