Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 3,864	$ 4,120
Operating expenses
Cost of transportation and services	1,898	2,096
Direct operating expense	1,360	1,406
Sales, general and administrative expense	525	486
Total operating expenses	3,783	3,988
Operating income	81	132
Other expense (income)	(18)	(17)
Foreign currency (gain) loss	(8)	2
Debt extinguishment loss	0	5
Interest expense	72	71
Income before income tax provision	35	71
Income tax provision	10	19
Net income	25	52
Net income attributable to noncontrolling interests	(2)	(5)
Net income attributable to XPO	23	47
Earnings per share data:
Net income attributable to common shareholders	$ 21	$ 43
Basic earnings per share (in dollars per share)	$ 0.23	$ 0.40
Diluted earnings per share (in dollars per share)	$ 0.20	$ 0.37
Weighted-average common shares outstanding
Basic weighted-average common shares outstanding (in shares)	92	107
Diluted weighted-average common shares outstanding (in shares)	103	117