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v3.21.1

Fair Value Measurements (Details 1) - USD ($) | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Feb. 28, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Apr. 30, 2020
Debt Instrument [Line Items] |  |  |  |
Notes payable, carrying value |  | $ 7,267,200,000 | $ 7,426,200,000 |
Debt instruments, fair value |  | $ 7,859,200,000 | 8,515,900,000 |
2.900% Senior Notes due 2020 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes interest rate |  | 2.90% |  |
3.625% Senior Notes due 2022 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 1,044,200,000 | 1,054,100,000 |
Notes payable, carrying value |  | $ 998,200,000 | 997,900,000 |
Senior notes interest rate |  | 3.625% |  |
4.050% Senior Notes due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 1,940,800,000 | 2,003,100,000 |
Notes payable, carrying value |  | $ 1,741,500,000 | 1,741,200,000 |
Senior notes interest rate |  | 4.05% |  |
2.250% Senior Notes due May 1, 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 1,455,300,000 | 1,557,200,000 |
Notes payable, carrying value |  | $ 1,491,400,000 | 1,491,100,000 |
Senior notes interest rate |  | 2.25% |  |
5.200% Senior Notes due 2045 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 1,394,800,000 | 2,365,100,000 |
Notes payable, carrying value |  | $ 1,099,700,000 | 1,723,400,000 |
Senior notes interest rate |  | 5.20% |  |
Long Term Debt, Exchanged, Amount | $ 624,600,000 |  |  |
3.150% Senior Notes due May 1, 2050 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 1,369,800,000 | 1,536,400,000 |
Notes payable, carrying value |  | $ 1,472,700,000 | 1,472,600,000 |
Senior notes interest rate |  | 3.15% |  |
3.250% Senior Notes, Due February 15, 2051 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Notes payable, fair value |  | $ 654,300,000 | 0 |
Notes payable, carrying value |  | $ 463,700,000 | $ 0 |
Senior notes interest rate |  | 3.25% |  |
Long Term Debt, Exchanged, Amount | $ 700,700,000 |  |  |
Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Face amount |  |  |  | $ 3,000,000,000.0
Senior Notes | 2.250% Senior Notes due May 1, 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes interest rate |  |  |  | 2.25%
Face amount |  |  |  | $ 1,500,000,000
Senior Notes | 3.150% Senior Notes due May 1, 2050 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes interest rate |  |  |  | 3.15%
Face amount |  |  |  | $ 1,500,000,000

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