CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 560	$ 1,158
Accounts receivable, net of allowance for credit losses of $29 and $28 as of June 30, 2021 and December 31, 2020, respectively	1,255	1,520
Inventories	199	223
Prepaid expenses and other current assets	132	157
Total current assets	2,146	3,058
Property, plant and equipment, net	1,622	1,627
Operating lease right-of-use assets	589	604
Goodwill	7,045	6,873
Intangible assets, net	1,172	1,167
Investments in equity method investees	111	521
Other assets	176	176
Total assets	12,861	14,026
Liabilities and Stockholders' Equity
Accounts payable and accrued expenses	1,404	1,633
Current portion of long-term debt	2	2
Current portion of long-term operating lease liabilities	145	141
Total current liabilities	1,551	1,776
Long-term debt	4,008	4,013
Long-term operating lease liabilities	492	499
Other liabilities	792	847
Commitments and contingencies
Redeemable noncontrolling interest	78	82
Quest Diagnostics stockholders’ equity:
Common stock, par value $0.01 per share; 600 shares authorized as of both June 30, 2021 and December 31, 2020; 217 shares issued as of both June 30, 2021 and December 31, 2020	2	2
Additional paid-in capital	2,555	2,841
Retained earnings	10,246	9,303
Accumulated other comprehensive loss	(10)	(21)
Treasury stock, at cost; 95 and 84 shares as of June 30, 2021 and December 31, 2020, respectively	(6,894)	(5,366)
Total Quest Diagnostics stockholders' equity	5,899	6,759
Noncontrolling interests	41	50
Total stockholders' equity	5,940	6,809
Total liabilities and stockholders' equity	$ 12,861	$ 14,026