Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities of continuing operations
Net income (loss)	$ 219	$ (11)
Net income (loss) from discontinued operations, net of taxes	22	68
Income (loss) from continuing operations	197	(79)
Adjustments to reconcile net income (loss) from continuing operations to net cash from operating activities
Depreciation and amortization expense	357	351
Stock compensation expense	29	36
Accretion of debt	15	14
Deferred tax (benefit) expense	5	12
Debt extinguishment loss	54	0
Unrealized (gain) loss on foreign currency option and forward contracts	1	(1)
Gains on sales of property and equipment	(36)	(67)
Other	4	45
Changes in assets and liabilities
Accounts receivable	(371)	(165)
Other assets	(1)	(54)
Accounts payable	133	(29)
Accrued expenses and other liabilities	171	229
Net cash provided by operating activities from continuing operations	558	292
Cash flows from investing activities of continuing operations
Payment for purchases of property and equipment	(212)	(220)
Proceeds from sale of property and equipment	72	137
Other	(3)	5
Net cash used in investing activities from continuing operations	(143)	(78)
Cash flows from financing activities of continuing operations
Proceeds from issuance of debt	0	1,155
Proceeds from (repayment of) borrowings related to securitization program	(24)	25
Repurchase of debt	(2,769)	0
Proceeds from borrowings on ABL facility	0	820
Repayment of borrowings on ABL facility	(200)	(620)
Repayment of debt and finance leases	(63)	(50)
Payment for debt issuance costs	(5)	(21)
Purchase of noncontrolling interests	0	0
Issuance (repurchase) of common stock	384	(114)
Change in bank overdrafts	33	19
Payment for tax withholdings for restricted shares	(25)	(21)
Distribution from GXO	794	0
Other	(5)	2
Net cash provided by (used in) financing activities from continuing operations	(1,880)	1,195
Cash flows from discontinued operations
Operating activities of discontinued operations	68	398
Investing activities of discontinued operations	(95)	(145)
Financing activities of discontinued operations	(302)	(12)
Net cash provided by (used in) discontinued operations	(329)	241
Effect of exchange rates on cash, cash equivalents and restricted cash	(7)	(2)
Net increase (decrease) in cash, cash equivalents and restricted cash	(1,801)	1,648
Cash, cash equivalents and restricted cash, beginning of period	2,065	387
Cash, cash equivalents and restricted cash, end of period	264	2,035
Less: Cash, cash equivalents and restricted cash of discontinued operations, end of period	0	404
Cash, cash equivalents and restricted cash of discontinued operations, end of period	264	1,631
Supplemental disclosure of cash flow information
Leased assets obtained in exchange for new operating lease liabilities, including related to an acquisition in 2021	140	188
Leased assets obtained in exchange for new finance lease liabilities	54	9
Cash paid for interest	195	209
Cash paid for income taxes	$ 74	$ 3