Long-Term Debt (3.50% 2032 GO Zone Refunding Bonds) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Nov. 30, 2017
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 4,976	$ 5,283
Senior Notes | Go Zone 3.50% Bonds Due 2032
Debt Instrument [Line Items]
Amount of bonds remarketed			$ 250
Senior Notes | 3.50% Senior Notes Due 2032
Debt Instrument [Line Items]
Stated interest rate (percent)	3.50%
Debt Instrument, Face Amount	$ 250
Long-term Debt, Gross	$ 250	$ 250