Income Taxes, Tax Credits and Loss Carryforwards (Details) $ in Millions	Dec. 31, 2023 USD ($)
U.S. State [Member] | Operating Loss Carryforwards, Limited [Member]
Operating Loss Carryforwards
Income tax NOLs	$ 12,164
U.S. State [Member] | Tax Credits, Limited [Member]
Operating Loss Carryforwards
Income tax credits	76
U.S. State [Member] | Tax Credits, Unlimited [Member]
Operating Loss Carryforwards
Income tax credits	2
Foreign [Member] | Operating Loss Carryforwards, Unlimited [Member]
Operating Loss Carryforwards
Income tax NOLs	329
Foreign [Member] | Tax Credits, Limited [Member]
Operating Loss Carryforwards
Income tax credits	$ 748