Debt - Schedule of Debt (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 1,700,000,000.0
Unaccreted discount and debt issuance costs	(11,800,000)
Hedge accounting fair value adjustments	25,900,000
Total	1,714,100,000
Notional amount of derivatives	1,825,000,000.0	$ 946,900,000
Designated derivatives:
Debt Instrument [Line Items]
Notional amount of derivatives	1,661,700,000	784,000,000.0
Designated derivatives: \| Fair value hedges: \| Interest rate swap contracts
Debt Instrument [Line Items]
Notional amount of derivatives	300,000,000.0	$ 300,000,000.0
Senior notes \| 4.500% fixed-rate notes (2024 Notes)
Debt Instrument [Line Items]
Long-term debt	$ 350,000,000.0
Effective interest rate	4.63%
Stated interest rate	4.50%
Senior notes \| 4.500% fixed-rate notes (2024 Notes)
Debt Instrument [Line Items]
Long-term debt	$ 150,000,000.0
Effective interest rate	4.87%
Stated interest rate	4.50%
Senior notes \| 4.350% fixed-rate notes ("2025 Notes")
Debt Instrument [Line Items]
Long-term debt	$ 300,000,000.0
Effective interest rate	4.47%
Stated interest rate	4.35%
Senior notes \| 3.750% fixed-rate notes ("2029 Notes")
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000.0
Effective interest rate	3.86%
Stated interest rate	3.75%
Senior notes \| 5.950% fixed-rate notes ("2041 Notes")
Debt Instrument [Line Items]
Long-term debt	$ 400,000,000.0
Effective interest rate	6.03%
Stated interest rate	5.95%

Debt Instrument, Derivative Instruments Fair Value Adjustment

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Publisher FASB
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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