Revenue Recognition - Disaggregation of Revenue by Products and Services (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]                      
Revenue $ 3,361 $ 3,270 $ 3,186 $ 2,989 $ 2,938 $ 2,675 $ 2,127 $ 2,459 $ 12,806 $ 10,199 $ 10,681
Eliminations                      
Disaggregation of Revenue [Line Items]                      
Revenue                 (253) (154) (181)
LTL | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 4,118 3,539 3,791
Truck brokerage | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 8,907 6,800 7,041
North America | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 9,982 7,731 7,939
North America | LTL | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 4,192 3,575 3,841
North America | Truck brokerage | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 2,749 1,684 1,372
North America | Last mile | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 1,016 908 873
North America | Other brokerage | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 2,025 1,564 1,853
Europe | Operating Segments                      
Disaggregation of Revenue [Line Items]                      
Revenue                 $ 3,077 $ 2,622 $ 2,923