Leases - Right-of-use (ROU) Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Assets
ROU assets (recorded within other long-term assets)	$ 2,578	$ 2,554
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other long-term assets	Other long-term assets
Liabilities
Short-term (recorded within accounts payable and accrued expenses)	$ 177	$ 180
Long-term (recorded within other long-term liabilities)	3,144	3,133
Total lease liabilities	$ 3,321	$ 3,313
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued expenses	Accounts payable and accrued expenses
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities