Nature of Operations and Basis of Presentation - Components of Other (Income) Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other components of net periodic benefit cost	$ (11)	$ (9)
Net loss from investments	4	10
Other (income) expense, net	$ (7)	$ 1

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

+ References

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-Name Accounting Standards Codification
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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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