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Stock Options And Other Stock Plans (Stock Options, Retention Awards And Performance Retention Awards) (Narrative) (Details) $ / shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) $ / shares
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 | $ / shares | $ 0
Unrecognized compensation expense | $ 15
Expected weighted average period (in years) of nonvested stock options to be recognized | 10 months 24 days
Retention Awards [Member] |
Schedule of Share-based Compensation Arrangements [Line Items] |
Years until vest | 4 years
Unrecognized compensation expense | $ 88
Expected weighted average period (in years) of nonvested stock options to be recognized | 1 year 6 months
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
Continued employment requirement | Stock units awarded to selected employees under these grants are subject to continued employment for 37 months and the attainment of certain levels of ROIC, modified for the relative OIG.
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 | $ 16
Expected weighted average period (in years) of nonvested stock options to be recognized | 10 months 24 days

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- Definition Description of the estimated period of time over which an employee is required to provide service in exchange for the share-based payment award, which often is the vesting period. This period may be explicit or implicit based on the terms of the award, and may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). + References No definition available. + Details
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- Definition The number of stock options outstanding that are subject to performance or market-based vesting conditions before giving the employee the legal right to convert the award to shares. + References No definition available. + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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