Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The computations of basic and diluted earnings (loss) per share were as follows:
Three Months Ended June 30,Six Months Ended June 30,
(In millions, except per share data)2021202020212020
Basic earnings (loss) per common share
Net income (loss) attributable to XPO$156 $(131)$271 $(108)
Series A preferred stock dividends— (1)— (2)
Net income (loss) attributable to common shares, basic$156 $(132)$271 $(110)
Basic weighted-average common shares112 91 109 92 
Basic earnings (loss) per share$1.39 $(1.45)$2.48 $(1.20)
Diluted earnings (loss) per common share
Net income (loss) attributable to common shares, diluted$156 $(132)$271 $(110)
Basic weighted-average common shares112 91 109 92 
Dilutive effect of stock-based awards and warrants1 — 4 — 
Diluted weighted-average common shares113 91 113 92 
Diluted earnings (loss) per share$1.38 $(1.45)$2.40 $(1.20)
Potential common shares excluded— 20 — 21