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Shareholders' Equity and Long-Term Incentive Compensation - Black-Scholes Option-Pricing Model (Details) - Stock options	Feb. 20, 2020	Feb. 21, 2019	Feb. 22, 2018
Black-Scholes Option-Pricing Model [Line Items]
Annual expected stock price volatility	33.48%	32.70%	31.14%
Annual expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	1.41%	2.53%	2.75%
Expected life of stock option (in years)	6 years	6 years	6 years

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- Definition

Black-Scholes Option-Pricing Model

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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 (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

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-Publisher FASB
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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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