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Debt (Details) - USD ($) $ in Millions |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 05, 2017 | Sep. 30, 2017 | Sep. 30, 2017 | Dec. 31, 2016
Long-Term Debt |  |  |  |
Less deferred debt issuance costs |  | $ (14.0) | $ (14.0) | $ (12.3)
Total debt |  | 3,560.8 | 3,560.8 | 3,010.7
Less current portion |  | 1.1 | 1.1 | 375.2
Total long-term debt |  | 3,559.7 | 3,559.7 | 2,635.5
Total debt, Approximate Fair Value |  | 3,623.5 | 3,623.5 | 3,062.2
Less short-term debt, Approximate Fair Value |  | 1.1 | 1.1 | 375.7
Long-term debt, Approximate Fair Value |  | 3,622.4 | 3,622.4 | 2,686.5
The “Revolving Credit Facility” |  |  |  |
Long-Term Debt |  |  |  |
Maximum borrowing capacity |  | 2,000.0 | 2,000.0 |
Borrowings under the Revolving Credit Facility |  | 0.0 | 0.0 |
Commercial Paper Program |  |  |  |
Long-Term Debt |  |  |  |
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | 1,191.9 | 1,191.9 | 1,018.9
Total debt, Approximate Fair Value |  | 1,191.9 | 1,191.9 | $ 1,018.9
Maximum borrowing capacity |  | $ 2,000.0 | $ 2,000.0 |
Maximum maturity term |  |  | 397 days |
Average interest rate (as a percent) |  | 1.48% | 1.48% |
Senior Notes |  |  |  |
Long-Term Debt |  |  |  |
Redemption price as a percentage of principal amount |  |  | 100.00% |
1.55% Senior Notes due September 2017 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) |  | 1.55% | 1.55% | 1.55%
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  |  |  | $ 374.9
Total debt, Approximate Fair Value |  |  |  | $ 375.4
Repayment of debt |  | $ 375.0 |  |
2.55% Senior Notes due January 2019 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) |  | 2.55% | 2.55% | 2.55%
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | $ 749.7 | $ 749.7 | $ 749.5
Total debt, Approximate Fair Value |  | $ 756.1 | $ 756.1 | $ 758.3
2.20% Senior Notes due April 2020 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) | 2.20% | 2.20% | 2.20% |
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | $ 399.7 | $ 399.7 |
Total debt, Approximate Fair Value |  | $ 400.6 | $ 400.6 |
Debt instrument, principal amount | $ 400.0 |  |  |
Debt instrument, face amount, net of discount (as a percent) | 99.922% |  |  |
Redemption price as a percentage of principal amount | 100.00% |  |  |
3.125% Senior Notes due September 2021 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) |  | 3.125% | 3.125% | 3.125%
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | $ 374.8 | $ 374.8 | $ 374.8
Total debt, Approximate Fair Value |  | $ 383.5 | $ 383.5 | $ 380.4
4.00% Senior Notes due February 2022 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) |  | 4.00% | 4.00% | 4.00%
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | $ 499.5 | $ 499.5 | $ 499.4
Total debt, Approximate Fair Value |  | $ 527.7 | $ 527.7 | 523.7
3.20% Senior Notes due April 2024 |  |  |  |
Long-Term Debt |  |  |  |
Stated interest rate (as a percent) | 3.20% | 3.20% | 3.20% |
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | $ 349.6 | $ 349.6 |
Total debt, Approximate Fair Value |  | 354.1 | 354.1 |
Debt instrument, principal amount | $ 350.0 |  |  |
Debt instrument, face amount, net of discount (as a percent) | 99.888% |  |  |
Redemption price as a percentage of principal amount | 100.00% |  |  |
Notes payable to foreign banks and other debt |  |  |  |
Long-Term Debt |  |  |  |
Debt carrying amount, net of unamortized discount before deferred debt issuance costs |  | 9.6 | 9.6 | 5.5
Total debt, Approximate Fair Value |  | 9.6 | 9.6 | $ 5.5
2.20% and 3.20% Senior Notes due April, 2020 and 2024, respectively |  |  |  |
Long-Term Debt |  |  |  |
Debt issuance costs incurred |  | $ 5.2 | $ 5.2 |

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- Definition Carrying amount, net of unamortized (discount) premium and before 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 No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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. + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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