XML 46 R6.htm IDEA: XBRL DOCUMENT v3.10.0.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating activities      
Net income $ 192 $ 178 $ 61
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 46 35 39
Stock-based compensation 44 32 26
Deferred income taxes 1 (25) 42
Changes in operating assets and liabilities:      
Accounts receivable 10 (14) 0
Unbilled revenue (14) (4) (79)
Prepaid expenses (9) 28 (45)
Accounts payable and other current liabilities (8) 23 11
Client deposits 4 (4) (2)
Accrued wages 23 26 73
Accrued health insurance costs (16) 22 16
Accrued workers' compensation costs (7) 9 60
Payroll taxes payable and other payroll withholdings (305) 294 (175)
Other assets (64) (11) 174
Other liabilities (1) 17 (9)
Net cash (used in) provided by operating activities (104) 606 192
Investing activities      
Purchases of marketable securities (258) 0 (15)
Proceeds from sale and maturity of marketable securities 101 14 28
Acquisitions of property and equipment (43) (38) (40)
Net cash used in investing activities (200) (24) (27)
Financing activities      
Repurchase of common stock (61) (44) (72)
Proceeds from issuance of common stock 14 16 9
Awards effectively repurchased for required employee withholding taxes (22) (11) (4)
Proceeds from issuance of debt, net 210 0 58
Payments for extinguishment of debt (204) 0 (58)
Repayment of debt (22) (38) (37)
Net cash used in financing activities (85) (77) (104)
Net (decrease) increase in unrestricted and restricted cash and cash equivalents (389) 505 61
Beginning of period 1,738 1,233 1,172
End of period 1,349 1,738 1,233
Supplemental disclosures of cash flow information      
Interest paid 17 16 15
Income taxes paid, net 49 2 39
Supplemental schedule of noncash investing and financing activities      
Payable for purchase of property and equipment $ 3 $ 2 $ 1