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v3.21.2

Long-term Debt (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt, Gross | $ 3,411,000,000.0 |  | $ 3,411,000,000.0 |  | $ 3,418,300,000
Long-term Debt, Fair Value | 3,862,100,000 |  | 3,862,100,000 |  | 3,995,000,000.0
Long-term Debt, Current Maturities | 503,100,000 |  | 503,100,000 |  | 502,500,000
Long-term Debt, Excluding Current Maturities | 2,907,900,000 |  | 2,907,900,000 |  | 2,915,800,000
Gain (Loss) on Extinguishment of Debt | 0 | $ 0 | (74,000,000.0) | $ 0 |
3.750% Notes Due 2021 (less unamortized discount and issuance costs of $0.0 and $0.3, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Maturity Date |  |  | Oct. 01, 2021 |  |
Interest Rate Stated Percentage | 3.75% |  | 3.75% |  |
Effective Interest Rate | 3.98% |  | 3.98% |  |
Unamortized Discount | $ 0.0 |  | $ 0.0 |  |
Issuance Cost | 300,000 |  | 300,000 |  |
Long-term Debt, Gross | 499,700,000 |  | 499,700,000 |  | 499,100,000
4.000% Notes Due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 250,000,000.0 |  | $ 250,000,000.0 |  |
Interest Rate Stated Percentage | 4.00% |  | 4.00% |  |
Effective Interest Rate | 4.13% |  | 4.13% |  |
Long-term Debt, Gross | $ 0 |  | $ 0 |  | 249,300,000
Gain (Loss) on Extinguishment of Debt |  |  | 9,200,000 |  |
3.750% Notes Due 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Interest Rate Stated Percentage | 3.75% |  | 3.75% |  |
Effective Interest Rate | 4.32% |  | 4.32% |  |
Long-term Debt, Gross | $ 0 |  | $ 0 |  | 498,800,000
Gain (Loss) on Extinguishment of Debt |  |  | 36,500,000 |  |
4.200% Notes Due 2024 (less unamortized discount and issuance costs of $0.1 and $0.6, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Effective Interest Rate | 4.24% |  | 4.24% |  |
Long-term Debt, Gross |  |  |  |  | 498,300,000
4.650% Notes Due 2028 (less unamortized discount and issuance costs of $1.3 and $3.2, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Maturity Date |  |  | Oct. 01, 2028 |  |
Interest Rate Stated Percentage | 4.65% |  | 4.65% |  |
Effective Interest Rate | 4.78% |  | 4.78% |  |
Unamortized Discount | $ 1,300,000 |  | $ 1,300,000 |  |
Issuance Cost | 3,200,000 |  | 3,200,000 |  |
Long-term Debt, Gross | 495,500,000 |  | 495,500,000 |  | 495,200,000
4.750% Notes Due 2030 (less unamortized discount and issuance costs of $3.4 and $5.4, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 650,000,000.0 |  | $ 650,000,000.0 |  |
Maturity Date |  |  | Mar. 30, 2030 |  |
Interest Rate Stated Percentage | 4.75% |  | 4.75% |  |
Effective Interest Rate | 4.92% |  | 4.92% |  |
Unamortized Discount | $ 3,400,000 |  | $ 3,400,000 |  |
Issuance Cost | 5,400,000 |  | 5,400,000 |  |
Long-term Debt, Gross | 641,200,000 |  | 641,200,000 |  | 640,800,000
2.400% Notes Due 2031 (less unamortized discount and issuance costs of $0.8 and $4.5, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Effective Interest Rate | 2.512% |  | 2.512% |  |
Unamortized Discount | $ 800,000 |  | $ 800,000 |  |
Issuance Cost | 4,500,000 |  | 4,500,000 |  |
Long-term Debt, Gross | $ 494,700,000 |  | $ 494,700,000 |  | 0
3.375% Notes Due 2041 (less unamortized discount and issuance costs of $1.1 and $5.7, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Effective Interest Rate | 3.448% |  | 3.448% |  |
Unamortized Discount | $ 1,100,000 |  | $ 1,100,000 |  |
Issuance Cost | 5,700,000 |  | 5,700,000 |  |
Long-term Debt, Gross | 493,200,000 |  | 493,200,000 |  | 0
5.400% Notes Due 2048 (less unamortized discount and issuance costs of $2.7 and $5.1, respectively) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Maturity Date |  |  | Oct. 01, 2048 |  |
Interest Rate Stated Percentage | 5.40% |  | 5.40% |  |
Effective Interest Rate | 5.48% |  | 5.48% |  |
Unamortized Discount | $ 2,700,000 |  | $ 2,700,000 |  |
Issuance Cost | 5,100,000 |  | 5,100,000 |  |
Long-term Debt, Gross | 492,200,000 |  | 492,200,000 |  | 492,100,000
Other notes payable and capitalized leases |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt, Gross | $ 45,200,000 |  | $ 45,200,000 |  | $ 44,700,000
Unsecured Debt 2.400% Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest Rate Stated Percentage | 2.40% |  | 2.40% |  |
Unsecured Debt | $ 494,500,000 |  | $ 494,500,000 |  |
Debt Instrument, Unamortized Discount | 800,000 |  | 800,000 |  |
Debt Issuance Costs, Gross | 4,700,000 |  | 4,700,000 |  |
Unsecured Debt 3.375% Note |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 500,000,000.0 |  | $ 500,000,000.0 |  |
Interest Rate Stated Percentage | 3.375% |  | 3.375% |  |
Unsecured Debt | $ 493,100,000 |  | $ 493,100,000 |  |
Debt Instrument, Unamortized Discount | 1,100,000 |  | 1,100,000 |  |
Debt Issuance Costs, Gross | 5,800,000 |  | 5,800,000 |  |
Unsecured Debt 4.200% Notes Remaining Principal |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Par Value | $ 250,000,000.0 |  | $ 250,000,000.0 |  |
Maturity Date |  |  | Apr. 15, 2024 |  |
Interest Rate Stated Percentage | 4.20% |  | 4.20% |  |
Unamortized Discount | $ 100,000 |  | $ 100,000 |  |
Issuance Cost | 600,000 |  | 600,000 |  |
Long-term Debt, Gross | $ 249,300,000 |  | 249,300,000 |  |
Gain (Loss) on Extinguishment of Debt |  |  | $ 28,300,000 |  |

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