Condensed Consolidated Statements of (Loss) Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue	$ 3,502	$ 4,238	$ 7,366	$ 8,358
Operating expenses
Cost of transportation and services	1,641	2,108	3,539	4,204
Direct operating expense	1,370	1,417	2,730	2,823
Sales, general and administrative expense	632	455	1,157	941
Total operating expenses	3,643	3,980	7,426	7,968
Operating (loss) income	(141)	258	(60)	390
Other expense (income)	(21)	(13)	(39)	(30)
Foreign currency loss (gain)	3	8	(5)	10
Debt extinguishment loss	0	0	0	5
Interest expense	82	72	154	143
(Loss) income before income tax (benefit) provision	(205)	191	(170)	262
Income tax (benefit) provision	(71)	46	(61)	65
Net (loss) income	(134)	145	(109)	197
Net loss (income) attributable to noncontrolling interests	3	(10)	1	(15)
Net (loss) income attributable to XPO	(131)	135	(108)	182
Earnings (loss) per share data
Net (loss) income attributable to common shareholders	$ (132)	$ 122	$ (110)	$ 165
Basic (loss) earnings per share (in dollars per share)	$ (1.45)	$ 1.32	$ (1.20)	$ 1.66
Diluted (loss) earnings per share (in dollars per share)	$ (1.45)	$ 1.19	$ (1.20)	$ 1.51
Weighted-average common shares outstanding
Basic weighted-average common shares outstanding (in shares)	91	92	92	100
Diluted weighted-average common shares outstanding (in shares)	91	102	92	110