Schedule I - Condensed Financial Information of Cigna Corporation - Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents		$ 5,081	$ 10,182
Other current assets		1,283	930
Total current assets		36,134	27,799
Other noncurrent assets		2,728	2,687
TOTAL ASSETS		154,889	155,451
Liabilities
Short-term debt		2,545	3,374
Total current liabilities		43,572	36,022
Long-term debt		31,125	29,545
TOTAL LIABILITIES		107,705	105,065
Shareholders' Equity
Common stock	[1]	4	4
Additional paid-in capital		29,574	28,975
Accumulated other comprehensive loss		(884)	(861)
Retained earnings		32,593	28,575
Less: Treasury stock, at cost		(14,175)	(6,372)
TOTAL SHAREHOLDERS' EQUITY		47,112	50,321
Total liabilities and equity		$ 154,889	$ 155,451
Common stock, shares issued (in shares)		394,194,000	390,276,000	385,543,000
Common stock, shares authorized (in shares)		600,000,000	600,000,000	600,000,000
Cigna
Assets
Cash and cash equivalents		$ 33	$ 4,157
Short-term investments		99	49
Other current assets		9	4
Total current assets		141	4,210
Intercompany receivable		8,962	1,666
Investments in subsidiaries		70,896	76,040
Other noncurrent assets		17	22
TOTAL ASSETS		80,016	81,938
Liabilities
Short-term debt		2,453	3,278
Other current liabilities		775	616
Total current liabilities		3,228	3,894
Intercompany payable		5	5
Long-term debt		29,671	27,718
TOTAL LIABILITIES		32,904	31,617
Shareholders' Equity
Common stock		4	4
Additional paid-in capital		29,574	28,975
Accumulated other comprehensive loss		(884)	(861)
Retained earnings		32,593	28,575
Less: Treasury stock, at cost		(14,175)	(6,372)
TOTAL SHAREHOLDERS' EQUITY		47,112	50,321
Total liabilities and equity		$ 80,016	$ 81,938
Common stock, shares issued (in shares)		394,000,000	390,000,000
Common stock, shares authorized (in shares)		600,000,000	600,000,000

[1] Par value per share, $0.01; shares issued, 394 million as of December 31, 2021 and 390 million as of December 31, 2020; authorized shares, 600 million.