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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Jan. 01, 2017
Income Taxes [Line Items] |  |  |  |  |
Unrecognized tax benefits |  |  |  |  | $ 1,000
Impact of unrecognized tax benefits if recognized |  |  |  |  | $ 1,000
Period of expiration of the statute of limitations for certain jurisdictions |  |  | Within the next twelve months |  |
Jurisdictions statutes of limitations expiration period |  |  | 12 months |  |
Income tax benefits | $ (74,992) | $ (88,175) | $ (286,774) | $ (306,577) |
ASU 2016-09 |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Income tax benefits | 1,000 |  | $ 9,000 |  |
Excess tax benefit from share based compensation |  | $ 1,000 |  | $ 36,000 |
Minimum |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years |  |  | 3 years |  |
Maximum |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Accrued interest and penalties | $ 1,000 |  | $ 1,000 |  |
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years |  |  | 4 years |  |

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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11374-113907 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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