Background (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) segment	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, right-of-use asset, Statement of Financial Position [Extensible Enumeration]	Other, net	Other, net
Current operating lease liabilities	$ 310	$ 326
Operating lease liabilities	$ 840	922
Number of reportable segments | segment	1
Affiliates
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 335	391
Current operating lease liabilities	131	125
Operating lease liabilities	$ 224	$ 286