Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Supplemental Cash Flow Information [Abstract]
Interest (1)	[1]	$ 32	$ 49
Income Taxes, Net of Refunds Received		46	20
Interest Costs Capitalized		8	8
Accrued Capital Expenditures		528	436
Non-Cash Property Exchanges		63	25
Noncash Additions To Other Property, Plant and Equipment			$ 74
Collateral Posted On Derivative		$ 2,275

[1] Net of capitalized interest of $8 million for both the three months ended March 31, 2022 and 2021.