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Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions		1 Months Ended
	Feb. 12, 2021	Feb. 28, 2023	Jun. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Total assets			$ 34,068	$ 32,109
Total liabilities			24,240	23,605
Capital contribution contingent on regulatory approval	$ 185
Term of contingent consideration (in years)	8 years
Loan receivable issued	$ 213
Call option period (in years)	2 years
Revolving Credit Facility \| Freight Holding \| Freight Holding
Variable Interest Entity [Line Items]
Senior secured asset-based credit facility		$ 300
Moove
Variable Interest Entity [Line Items]
Term loan receivable			249
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total assets			3,600	3,900
Total liabilities			705	789
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total assets			$ 541	$ 548
Moove
Variable Interest Entity [Line Items]
Ownership interest (percent)	30.00%