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Amortization Percentage, Equal Quarterly Installments, Year One

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Amortization Percentage, Equal Quarterly Installments, Year Three

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Amortization Percentage, Equal Quarterly Installments, Year Two

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Interest and fees paid on total indebtedness

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Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option

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Line of Credit Facility Covenants Maximum Debt to Capitalization Percentage

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Proceeds from Issuance of Long term Debt Net Of Issuance Costs and Discounts

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Repayments Of Long-term Debt, Accrued Interest

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Repayments Of Long-term Debt, Principal

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Short-Term Debt Supporting International Operations, China

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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Face (par) amount of debt instrument at time of issuance.

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

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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.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt - Narrative (Details) - USD ($)	1 Months Ended								3 Months Ended		12 Months Ended
Debt - Narrative (Details) - USD ($)	Jul. 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Feb. 28, 2018	Aug. 31, 2017	Mar. 31, 2016	Nov. 30, 2010	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Feb. 02, 2018	Jan. 31, 2018
Debt Instrument [Line Items]
Line of credit facility, covenants, maximum debt to capitalization percentage											65.00%
Outstanding debt				$ 1,540,400,000							$ 1,436,900,000	$ 1,540,400,000
Issuance of long-term debt											225,000,000.0	0	$ 947,500,000
Repayment of long-term debt											331,300,000	225,000,000.0	168,800,000
Short-term debt				65,400,000							153,100,000	65,400,000
Commercial paper				26,000,000.0							150,000,000.0	26,000,000.0
Borrowings to support international operations in China				5,000,000.0							3,100,000	5,000,000.0
Interest and fees paid											54,400,000	62,800,000	$ 59,500,000
Other LOC
Debt Instrument [Line Items]
Line of credit				23,000,000.0							32,100,000	23,000,000.0
Notes 2023 Term
Debt Instrument [Line Items]
Repayment of long-term debt, principal									$ 90,600,000
Repayment of long-term debt, accrued interest									100,000
Loss on extinguishment of debt									$ 200,000
Letters of Credit \| Other LOC
Debt Instrument [Line Items]
Line of credit				15,700,000							$ 19,300,000	15,700,000
Notes 2022 Term Interest Rate Lock
Debt Instrument [Line Items]
Loss on forward interest rate lock, recorded in accumulated other comprehensive loss								$ 1,600,000
Line of Credit \| Revolving Credit Facility \| Credit Agreement
Debt Instrument [Line Items]
Agreement term											5 years
Line of credit, maximum borrowing capacity											$ 750,000,000
Line of credit facility, accordion feature, higher borrowing capacity option											1,250,000,000
Line of credit facility, borrowings		$ 125,000,000.0	$ 100,000,000.0
Line of credit facility, repayments	$ 125,000,000.0									$ 100,000,000.0
Outstanding debt				0							0	0
Line of credit facility, available borrowing capacity											$ 750,000,000.0
Senior Notes \| Notes 2028 Term
Debt Instrument [Line Items]
Face amount					$ 450,000,000									$ 450,000,000
Interest rate, stated percentage					3.50%						3.50%			3.50%
Issuance of long-term debt					$ 442,600,000
Senior Notes \| Notes 2027 Term
Debt Instrument [Line Items]
Face amount						$ 300,000,000
Interest rate, stated percentage						3.15%					3.15%
Issuance of long-term debt						$ 294,600,000
Senior Notes \| Notes 2026 Term
Debt Instrument [Line Items]
Face amount							$ 400,000,000
Interest rate, stated percentage							3.35%				3.35%
Proceeds from issuance of long-term debt							$ 393,400,000
Senior Notes \| Notes 2022 Term
Debt Instrument [Line Items]
Face amount								$ 300,000,000
Interest rate, stated percentage								3.625%			3.625%
Term Loan \| Notes 2023 Term
Debt Instrument [Line Items]
Face amount														$ 500,000,000	$ 500,000,000
Repayment of long-term debt				200,000,000
Amortization percentage, equal quarterly installments, year one														5.00%
Amortization percentage, equal quarterly installments, year two														5.00%
Amortization percentage, equal quarterly installments, year three														7.50%
Amortization percentage, equal quarterly installments, year four														10.00%
Amortization percentage, equal quarterly installments, year five														10.00%
Term loan, current portion				$ 34,400,000							$ 0	$ 34,400,000