Basis of Presentation Basis of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	$ 112		$ 110
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense	11	$ 0
Percentage of LIFO Inventory			10.00%
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results	91
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income	$ 69
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share	$ 0.12
Inventory, LIFO Reserve, Period Charge	$ 44
Inventory, LIFO Reserve, Period Charge (Income), after tax	$ 33
Inventory, LIFO Reserve, Period Charge (Income), per share	$ 0.06

The amount of after tax charge (income) related to LIFO inventory valuation.

No definition available.

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- Definition

The amount per share of the charge (income) related to LIFO inventory valuation.

+ References

No definition available.

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- Definition

The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

+ References

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- Definition

Amount of the effect of a change in accounting principle on diluted earnings per share.

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Amount of the effect of a change in accounting principle on net income.

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Amount of the effect of a change in accounting principle on operating profit or loss.

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- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

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- Definition

Amount of valuation and qualifying accounts and reserves.

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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