Leases, Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ROU assets, net reflected in the following balance sheet line items:
Operating lease ROU assets, net, balance sheet line item	Deferred charges and other assets, net	Deferred charges and other assets, net
Operating leases - deferred charges and other assets, net	$ 1,284	$ 1,204
Current lease liabilities reflected in the following balance sheet line items:
Current operating lease liabilities, balance sheet line item	Accrued expenses	Accrued expenses
Operating leases - accrued expenses	$ 315	$ 285
Noncurrent lease liabilities reflected in the following balance sheet line items:
Noncurrent operating lease liabilities, balance sheet line item	Other long-term liabilities	Other long-term liabilities
Operating leases - other long-term liabilities	$ 940	$ 885
Operating leases - total lease liabilities	$ 1,255	$ 1,170
ROU assets, net reflected in the following balance sheet line items:
Finance lease ROU assets, net, balance sheet line item	Property, plant, and equipment, net	Property, plant, and equipment, net
Finance leases - property, plant, and equipment, net	$ 1,846	$ 1,622
Current lease liabilities reflected in the following balance sheet line items:
Current finance lease liabilities, balance sheet line item	Less: Current portion	Less: Current portion
Finance leases - current portion of debt and finance lease obligations	$ 154	$ 120
Noncurrent lease liabilities reflected in the following balance sheet line items:
Noncurrent finance lease liabilities, balance sheet line item	Debt and finance lease obligations, less current portion	Debt and finance lease obligations, less current portion
Finance leases - debt and finance lease obligations, less current portion	$ 1,766	$ 1,544
Finance leases - total lease liabilities	$ 1,920	$ 1,664
Operating Leases
Weighted-average remaining lease term	7 years 1 month 6 days	7 years 7 months 6 days
Weighted-average discount rate	4.20%	4.70%
Finance Leases
Weighted-average remaining lease term	14 years 3 months 18 days	14 years 6 months
Weighted-average discount rate	4.00%	4.10%