FAIR VALUE (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Financial Assets Measured at Fair Value on Recurring Basis

The following table summarizes our fair value measurements at December 31, 2020 and 2019, respectively, for financial assets measured at fair value on a recurring basis:

			Fair Value Measurements Using
	Fair Value		Quoted Prices in Active Markets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(in millions)
December 31, 2020
Cash equivalents	$	4,548	$	4,548	$	—	$	—
Debt securities:
U.S. Treasury and other U.S. government corporations and agencies:
U.S. Treasury and agency obligations	616		—		616		—
Mortgage-backed securities	3,254		—		3,254		—
Tax-exempt municipal securities	1,447		—		1,447		—
Mortgage-backed securities:
Residential	17		—		17		—
Commercial	1,318		—		1,318		—
Asset-backed securities	1,372		—		1,372		—
Corporate debt securities	4,927		—		4,927		—
Total debt securities	12,951		—		12,951		—
Common stock	815		815		—		—
Total invested assets	$	18,314	$	5,363	$	12,951	$	—
December 31, 2019
Cash equivalents	$	3,660	$	3,660	$	—	$	—
Debt securities:
U.S. Treasury and other U.S. government corporations and agencies:
U.S. Treasury and agency obligations	354		—		354		—
Mortgage-backed securities	3,710		—		3,710		—
Tax-exempt municipal securities	1,463		—		1,463		—
Mortgage-backed securities:
Commercial	804		—		804		—
Asset-backed securities	1,093		—		1,093		—
Corporate debt securities	3,947		—		3,947		—
Total debt securities	11,371		—		11,371		—
Common stock	7		7		—		—
Total invested assets	$	15,038	$	3,667	$	11,371	$	—

Schedule of Assumptions Used For Inputs In Fair Value Measurement

The significant unobservable inputs utilized in these Level 3 fair value measurements (and selected values) include the enterprise value of Kindred at Home, annualized volatility and secured credit rate. Enterprise value was derived from a discounted cash flow model, which utilized significant unobservable inputs for long-term net operating profit after tax margin, or NOPAT, to measure underlying cash flows, weighted average cost of capital and long term growth rate. The table below presents the assumptions used for each reporting period.

	December 31, 2020		December 31, 2019
Annualized volatility	29.9	%	19.8	%
Secured credit rate	0.4	%	2.2	%
NOPAT	12.0	%	12.0	%
Weighted average cost of capital	9.5	%	10.0	%
Long term growth rate	3.0	%	3.0	%