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Reportable Segments and Geographic Areas Information - Reportable Segment Financial Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment operating income:      
Consolidated operating income $ 1,027,884 $ 1,177,380 $ 1,075,540
Interest and other income (expenses), net 54,425 (107,632) (87,795)
Total 1,082,309 1,069,748 987,745
Assets:      
Assets 10,357,483 9,844,559  
Additions to property, plant and equipment:      
Additions to property, plant and equipment 76,026 122,688 156,815
Depreciation and amortization:      
Depreciation and amortization 255,275 234,042 199,490
Operating Segments      
Segment operating income:      
Consolidated operating income 1,095,582 1,253,238 1,145,909
Assets:      
Assets 9,201,399 9,470,075  
Additions to property, plant and equipment:      
Additions to property, plant and equipment 75,019 117,918 153,319
Depreciation and amortization:      
Depreciation and amortization 252,791 231,775 197,510
Operating Segments | EIG      
Segment operating income:      
Consolidated operating income 770,620 865,307 782,144
Assets:      
Assets 6,554,414 6,651,920  
Additions to property, plant and equipment:      
Additions to property, plant and equipment 48,638 74,994 110,858
Depreciation and amortization:      
Depreciation and amortization 174,494 153,111 121,709
Operating Segments | EMG      
Segment operating income:      
Consolidated operating income 324,962 387,931 363,765
Assets:      
Assets 2,646,985 2,818,155  
Additions to property, plant and equipment:      
Additions to property, plant and equipment 26,381 42,924 42,461
Depreciation and amortization:      
Depreciation and amortization 78,297 78,664 75,801
Corporate      
Segment operating income:      
Consolidated operating income (67,698) (75,858) (70,369)
Assets:      
Assets 1,156,084 374,484  
Additions to property, plant and equipment:      
Additions to property, plant and equipment 1,007 4,770 3,496
Depreciation and amortization:      
Depreciation and amortization $ 2,484 $ 2,267 $ 1,980