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Stock-based Compensation (Narrative) (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($)
Stock Options [Member] |
Schedule of Share-based Compensation Arrangements [Line Items] |
Contractual term | 10 years
Years until vest | 3 years
Stock options, subject to performance or market-based vesting conditions | None
Unrecognized compensation expense | $ 28
Expected weighted average period (in years) of nonvested stock options to be recognized | 1 year 8 months 12 days
Retention Awards [Member] |
Schedule of Share-based Compensation Arrangements [Line Items] |
Years until vest | 4 years
Unrecognized compensation expense | $ 131
Expected weighted average period (in years) of nonvested stock options to be recognized | 2 years 2 months 12 days
Performance Retention Awards [Member] |
Schedule of Share-based Compensation Arrangements [Line Items] |
Operating income growth modifier range | The modifier can be up to +/- 25% of the award earned based on the ROIC achieved.
Requisite service period | 37 months
Contractual terms of award | We expense the fair value of the units that are probable of being earned based on our forecasted ROIC over the 3-year performance period, and with respect to the third year of the plan, the relative OIG modifier.
ROIC performance period | 3 years
Unrecognized compensation expense | $ 29
Expected weighted average period (in years) of nonvested stock options to be recognized | 1 year 7 months 6 days

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