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Debt Facilities - Senior Notes (Detail) € in Millions |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 23, 2020 USD ($) | Oct. 23, 2020 EUR (€) | Jul. 08, 2020 USD ($) | Jul. 08, 2020 EUR (€) | Jan. 02, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Oct. 07, 2020 USD ($) | Jun. 22, 2020 USD ($) | Dec. 31, 2019 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on debt extinguishment |  |  |  |  |  | $ 145,804,000 | $ 52,825,000 | $ 51,377,000 |  |  |
Long term debt, gross |  |  |  |  |  | 1,370,970,000 | 1,370,118,000 |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on debt extinguishment | $ 44,200,000 |  | $ 93,500,000 |  |  |  | 52,900,000 |  |  |  |
Redemption premium | 29,300,000 |  | 77,800,000 |  |  |  | 43,300,000 |  |  |  |
Write-off of unamortized debt issuance costs | $ 14,900,000 |  | $ 15,700,000 |  |  |  | 9,600,000 |  |  |  |
Unamortized debt discount and debt issuance costs |  |  |  |  |  | 92,773,000 | 78,030,000 |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 9,261,050,000 | 9,029,211,000 |  |  |  |
Senior Notes | 5.00% Infomart Senior Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 5.00% |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 150,000,000 | 450,000,000 |  |  |  |
Senior Notes | 5.375% Senior Notes Due In 2022 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  | 5.375% | 5.375% |  |  |  |  |
Debt redemption |  |  |  |  | $ 343,700,000 |  |  |  |  |  |
Loss on debt extinguishment |  |  |  |  | 5,900,000 | $ 5,900,000 |  |  |  |  |
Redemption premium |  |  |  |  | 4,600,000 | 4,600,000 |  |  |  |  |
Write-off of unamortized debt issuance costs |  |  |  |  | $ 1,300,000 | 1,300,000 |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 0 | 343,711,000 |  |  |  |
Senior Notes | 2.625% Senior Notes due 2024 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 2.625% |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 1,000,000,000 | 1,000,000,000 |  |  |  |
Senior Notes | 2.875% Euro Senior Notes Due 2024 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  | 2.875% | 2.875% |  | 2.875% |  |  |  |  |
Debt redemption | € |  |  |  | € 750.0 |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 0 | 841,500,000 |  |  |  |
Senior Notes | 1.250 % Senior Notes Due 2025 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 1.25% |  |  |  | 1.25% |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  |  | $ 500,000,000.0 |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  |  | $ 5,300,000 |
Long term debt, gross |  |  |  |  |  | $ 500,000,000 |  |  |  |  |
Senior Notes | 1.000% Senior Notes Due 2025 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 1.00% |  |  | 1.00% |  |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  | $ 700,000,000.0 |  |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  | $ 6,200,000 |  |
Long term debt, gross |  |  |  |  |  | $ 700,000,000 |  |  |  |  |
Senior Notes | 2.900% Senior Notes due 2026 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 2.90% |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 600,000,000 | 600,000,000 |  |  |  |
Senior Notes | 3.200% Senior Notes due 2029 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 1,200,000,000 | 1,200,000,000 |  |  |  |
Senior Notes | 2.875% Euro Senior Notes Due 2025 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) | 2.875% | 2.875% |  |  |  | 2.875% |  |  |  |  |
Debt redemption | € |  | € 1,000.0 |  |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 0 | 1,122,000,000 |  |  |  |
Senior Notes | 2.875% Euro Senior Notes due 2026 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) | 2.875% | 2.875% |  |  |  | 2.875% |  |  |  |  |
Debt redemption | € |  | € 500.0 |  |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 611,050,000 | 1,122,000,000 |  |  |  | € 1,000.0
Senior Notes | 1.800% Senior Notes Due 2027 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  |  |  |  |  | 1.80% |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  |  | $ 500,000,000.0 |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  |  | $ 5,600,000 |
Senior Notes | 3.000% Senior Notes Due 2050 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 3.00% |  |  |  | 3.00% |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  |  | $ 500,000,000.0 |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  |  | $ 14,200,000 |
Long term debt, gross |  |  |  |  |  | $ 500,000,000 |  |  |  |  |
Senior Notes | 2.150% Senior Notes Due 2030 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 2.15% |  |  |  | 2.15% |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  |  | $ 1,100,000,000 |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  |  | $ 12,900,000 |
Long term debt, gross |  |  |  |  |  | $ 1,100,000,000 |  |  |  |  |
Senior Notes | 5.875% Senior Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  | 5.875% | 5.875% |  | 5.875% |  |  |  |  |
Debt redemption |  |  | $ 1,100,000,000 |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  | $ 0 | $ 1,100,000,000 |  |  |  |
Senior Notes | 1.550% Senior Notes Due 2028 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 1.55% |  |  | 1.55% |  |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  | $ 650,000,000.0 |  |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  | $ 5,800,000 |  |
Long term debt, gross |  |  |  |  |  | $ 650,000,000 |  |  |  |  |
Senior Notes | 2.950% Senior Notes Due 2051 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate (percent) |  |  |  |  |  | 2.95% |  |  | 2.95% |  |
Aggregate principal debt amount issued |  |  |  |  |  |  |  |  | $ 500,000,000.0 |  |
Unamortized debt discount and debt issuance costs |  |  |  |  |  |  |  |  | $ 8,100,000 |  |
Long term debt, gross |  |  |  |  |  | $ 500,000,000 |  |  |  |  |
Senior Notes | 2024 and 2026 Senior Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on debt extinguishment |  |  |  |  |  | 93,500,000 |  |  |  |  |
Redemption premium |  |  |  |  |  | 77,800,000 |  |  |  |  |
Write-off of unamortized debt issuance costs |  |  |  |  |  | $ 15,700,000 |  |  |  |  |

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