CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 1,192	$ 135
Accounts receivable, net of allowance for doubtful accounts of $15 as of both December 31, 2019 and 2018	1,063	1,012
Inventories	123	99
Prepaid expenses and other current assets	112	144
Total current assets	2,490	1,390
Property, plant and equipment, net	1,453	1,288
Operating lease right-of-use assets	518	0
Goodwill	6,619	6,563
Intangible assets, net	1,121	1,207
Investments in equity method investees	482	436
Other assets	160	119
Total assets	12,843	11,003
Liabilities and Stockholders' Equity
Accounts payable and accrued expenses	1,041	1,021
Current portion of long-term debt	804	464
Current portion of long-term operating lease liabilities	145	0
Total current liabilities	1,990	1,485
Long-term debt	3,966	3,429
Long-term operating lease liabilities	413	0
Other liabilities	711	745
Commitments and contingencies
Redeemable noncontrolling interest	76	77
Quest Diagnostics stockholders’ equity:
Common stock, par value $0.01 per share; 600 shares authorized as of both December 31, 2019 and 2018; 217 shares issued as of both December 31, 2019 and 2018	2	2
Additional paid-in capital	2,722	2,667
Retained earnings	8,174	7,602
Accumulated other comprehensive (loss) income	(39)	(59)
Treasury stock, at cost; 84 shares and 82 shares as of December 31, 2019 and 2018, respectively	(5,218)	(4,996)
Total Quest Diagnostics stockholders' equity	5,641	5,216
Noncontrolling interests	46	51
Total stockholders' equity	5,687	5,267
Total liabilities and stockholders' equity	$ 12,843	$ 11,003