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Stock-Based Compensation - Stock Options Outstanding Roll Forward (Detail) - Equity Option [Member] - $ / shares shares in Thousands | 3 Months Ended
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Mar. 30, 2019 | Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding at December 31, 2018 | 1,790 |
Granted | 136 | 133
Exercised | (239) |
Outstanding at March 30, 2019 | 1,687 |
Weighted-average exercise price of options outstanding at beginning of period | $ 142.47 |
Weighted-average exercise price of options granted | 232.08 | $ 206.66
Weighted-average exercise price of options exercised | 108.57 |
Weighted-average exercise price of options outstanding at end of period | 154.42 |
Minimum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Weighted-average exercise price of options outstanding at beginning of period | 38.09 |
Weighted-average exercise price of options granted | 183.41 |
Weighted-average exercise price of options exercised | 38.09 |
Weighted-average exercise price of options outstanding at end of period | 61.63 |
Maximum [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Weighted-average exercise price of options outstanding at beginning of period | 208.47 |
Weighted-average exercise price of options granted | 238.52 |
Weighted-average exercise price of options exercised | 208.47 |
Weighted-average exercise price of options outstanding at end of period | $ 238.52 |

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- Definition Number of options outstanding, including both vested and non-vested options. + 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 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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