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Stock-Based Compensation (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) item $ / shares shares | Dec. 31, 2020 USD ($) employee $ / shares item | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 30, 2020 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common stock authorized and reserved for issuances | shares | 6,830 |  |  |
Shares authorized but not issued | shares | 2,141 |  |  |
Weighted-average Black-Scholes fair value per share at date of grant | $ / shares | $ 403.01 | $ 231.52 | $ 176.79 |
Stock Options And SOSARs [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unearned compensation | $ 23,115 |  |  |
Weighted average period | 1 year 6 months |  |  |
Total intrinsic value of options and SOSARs exercised | $ 498,399 | $ 236,573 | $ 219,984 |
Expiration period of SOSARs | 7 years |  |  |
Restricted Stock Units [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant date fair value | $ / shares |  | $ 905.96 | $ 627.94 |
Unearned compensation | $ 21,600 |  |  |
Weighted average period | 1 year 6 months |  |  |
Shares vested, fair value | $ 73,540 | $ 47,649 | $ 27,197 |
Performance Shares [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grant date fair value | $ / shares |  | $ 853.03 | $ 583.13 |
Unearned compensation | $ 69,203 |  |  |
Weighted average period | 1 year 8 months 12 days |  |  |
Shares vested, fair value | $ 97,496 | $ 60,081 | $ 0 |
Vesting period | 3 years |  |  |
Number of types of PSU awards | item |  | 2 |  |
Performance Shares [Member] | 2018 Stock Awards [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of installments | item | 4 |  |  |
Number of employees affected by modified service requirements | employee |  | 7 |  |
Modified service requirements expense |  | $ 71,441 |  |
Stock-based compensation expense | $ 63,050 |  |  |
Modified service requirements expense, unamortized | $ 8,391 |  |  |
Stock price | $ / shares |  |  |  | $ 1,374.17
Performance Shares [Member] | First Half Vested [Member] | 2018 Stock Awards [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of installments | item | 2 |  |  |
Units vested | shares | 33 |  |  |
Performance Shares Grant 1 [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance shares granted | shares |  |  | 33 |
Vesting period |  |  | 3 years |
Performance Shares Grant 2 [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance shares granted | shares |  |  | 13 |
Performance Shares Grant 2 [Member] | First Half Vested [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |
Vesting percentage |  |  | 40.00% |
Performance Shares Grant 2 [Member] | Second Half Vested [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 4 years |
Vesting percentage |  |  | 60.00% |
Minimum [Member] | Performance Shares [Member] | Vesting Period 1 [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of target number of shares to be earned if certain criteria is met | 0.00% |  | 0.00% |
Maximum [Member] | Performance Shares [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of target number of shares to be earned if certain criteria is met | 100.00% |  |  |
Maximum [Member] | Performance Shares [Member] | Vesting Period 1 [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of target number of shares to be earned if certain criteria is met | 300.00% |  | 300.00% |

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