CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 273	$ 135
Accounts receivable, net of allowance for doubtful accounts of $17 and $15 as of June 30, 2019 and December 31, 2018, respectively	1,088	1,012
Inventories	105	99
Prepaid expenses and other current assets	100	144
Total current assets	1,566	1,390
Property, plant and equipment, net	1,307	1,288
Operating lease right-of-use assets	511	0
Goodwill	6,605	6,563
Intangible assets, net	1,172	1,207
Investment in equity method investees	458	436
Other assets	141	119
Total assets	11,760	11,003
Liabilities and Stockholders' Equity
Accounts payable and accrued expenses	951	1,021
Current portion of long-term debt	807	464
Current portion of long-term operating lease liabilities	146	0
Total current liabilities	1,904	1,485
Long-term debt	3,169	3,429
Long-term operating lease liabilities	413	0
Other liabilities	689	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 June 30, 2019 and December 31, 2018; 217 shares issued as of both June 30, 2019 and December 31, 2018	2	2
Additional paid-in capital	2,686	2,667
Retained earnings	7,849	7,602
Accumulated other comprehensive loss	(58)	(59)
Treasury stock, at cost; 82 shares as of both June 30, 2019 and December 31, 2018	(5,020)	(4,996)
Total Quest Diagnostics stockholders' equity	5,459	5,216
Noncontrolling interests	50	51
Total stockholders' equity	5,509	5,267
Total liabilities and stockholders' equity	$ 11,760	$ 11,003