Provision (Benefit) for Income Taxes Deferred Tax Table (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred income tax liabilities:
Property, plant and equipment	$ 2,317	$ 0
Investments	295	3,565
Other	30	19
Total deferred income tax liabilities	2,642	3,584
Deferred income tax assets:
Accrued liabilities	667	53
Minimum tax credit	71	155
Foreign tax credit	140	140
Federal loss carryovers	147	0
State losses and credits	319	283
Other	94	30
Total deferred income tax assets	1,438	661
Less valuation allowance	320	224
Net deferred income tax assets	1,118	437
Overall net deferred income tax liabilities	$ 1,524	$ 3,147