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Long-Term Debt (Details) £ in Millions, $ in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 01, 2020 USD ($) | Dec. 31, 2020 AUD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 AUD ($) item | Dec. 31, 2020 USD ($) | Dec. 31, 2020 GBP (£) | Oct. 01, 2020 USD ($) | Aug. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | $ 1,689.6 |  |  |  | $ 2,360.3
Less: current portion |  |  |  |  | (87.5) |  |  |  | (103.3)
Net long-term debt |  |  |  |  | 1,602.1 |  |  |  | 2,257.0
Scheduled maturities of long-term debt for each of the next five years and thereafter |  |  |  |  |  |  |  |  |
2020 |  |  |  |  | 87.5 |  |  |  |
2021 |  |  |  |  | 24.2 |  |  |  |
2022 |  |  |  |  | 128.4 |  |  |  |
2023 |  |  |  |  | 23.6 |  |  |  |
2024 |  |  |  |  | 689.6 |  |  |  |
2024 and thereafter |  |  |  |  | 736.3 |  |  |  |
US Credit Agreement Revolving Credit Line |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | 108.0 |  |  |  | 45.0
Increase in borrowing capacity | $ 100.0 |  |  |  |  |  |  |  |
Maximum credit available | 800.0 |  |  |  |  |  |  |  |
Revolving loans solely for future U.S. acquisitions | 250.0 |  |  |  |  |  |  |  |
Future borrowings available for foreign acquisitions | 150.0 |  |  |  |  |  |  |  |
Maximum amount available for letters of credit | $ 50.0 |  |  |  |  |  |  |  |
Incremental interest rate for uncollateralized borrowings in excess of borrowing base (as a percent) | 1.25% |  |  |  |  |  |  |  |
Balance outstanding under credit agreement |  |  |  |  | 108.0 |  |  |  |
US Credit Agreement Revolving Credit Line | LIBOR |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Base rate of interest on loans | 1.75% |  |  |  |  |  |  |  |
UK Credit Agreement Revolving Credit Line |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  |  |  |  |  | 165.8
Maximum credit available | £ |  |  |  |  |  | £ 150.0 |  |  |
Additional facility capacity under accordion feature | £ |  |  |  |  |  | 100.0 |  |  |
Balance outstanding under credit agreement |  |  |  |  | $ 0.0 |  |  |  |
UK Credit Agreement Revolving Credit Line | Minimum | LIBOR |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Line of credit basis spread on variable rate (as a percent) |  |  |  | 1.10% |  |  |  |  |
UK Credit Agreement Revolving Credit Line | Maximum | LIBOR |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Line of credit basis spread on variable rate (as a percent) |  |  |  | 2.10% |  |  |  |  |
UK Credit Agreement Overdraft Line of Credit |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Maximum credit available | £ |  |  |  |  |  | 52.0 |  |  |
Amount of demand overdraft lines of credit available during specified time periods each year | £ |  |  |  |  |  | £ 40.0 |  |  |
Senior Subordinated Notes |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Domestic Subsidiaries ownership guaranteeing obligations (as a percent) |  | 100.00% |  | 100.00% | 100.00% | 100.00% |  |  |
Change of control, redemption price as a percentage of principal |  |  |  | 101.00% |  |  |  |  |
Sale of assets, redemption price as percentage of principal |  |  |  | 100.00% |  |  |  |  |
3.75% senior subordinated notes redeemed August 15, 2020 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  |  |  |  |  | $ 299.2
Interest rate (as a percent) |  | 3.75% | 3.75% | 3.75% | 3.75% | 3.75% |  |  | 3.75%
Repayment of debt at maturity |  |  | $ 300.0 |  |  |  |  |  |
5.75% senior subordinated notes due 2022 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  |  |  |  |  | $ 547.6
Interest rate (as a percent) |  | 5.75% |  | 5.75% | 5.75% | 5.75% | 5.75% |  | 5.75%
Repayment of debt |  |  |  |  |  |  | $ 550.0 |  |
5.375% senior subordinated notes due 2024 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  |  |  |  |  | $ 298.0
Interest rate (as a percent) |  | 5.375% |  | 5.375% | 5.375% | 5.375% |  |  | 5.375%
Repayment of debt |  |  |  |  | $ 300.0 |  |  |  |
Percentage of principal amount at which the entity may redeem the notes |  | 101.792% |  |  |  |  |  |  |
3.50% senior subordinated notes due 2025 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | $ 543.2 |  |  |  |
Interest rate (as a percent) |  | 3.50% |  | 3.50% | 3.50% | 3.50% |  | 3.50% |
Principal amount |  |  |  |  | $ 550.0 |  |  | $ 550.0 |
3.50% senior subordinated notes due 2025 | Debt Instrument Redemption Period Prior To September 2022 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 3.50% |  | 3.50% | 3.50% | 3.50% |  |  |
Percentage of principal amount at which the entity may redeem the notes |  |  |  | 100.00% |  |  |  |  |
Specified equity offerings, percentage of debt which may be redeemed |  |  |  | 103.50% |  |  |  |  |
3.50% senior subordinated notes due 2025 | Minimum | Debt Instrument Redemption Period Prior To September 2022 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Percentage of principal amount at which the entity may redeem the notes |  |  |  | 40.00% |  |  |  |  |
5.50% senior subordinated notes due 2026 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | $ 496.4 |  |  |  | $ 495.7
Interest rate (as a percent) |  | 5.50% |  | 5.50% | 5.50% | 5.50% |  |  | 5.50%
Principal amount |  |  |  |  | $ 500.0 |  |  |  |
5.50% senior subordinated notes due 2026 | Debt Redemption Prior to May 15, 2021 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 5.50% |  | 5.50% | 5.50% | 5.50% |  |  |
Percentage of principal amount at which the entity may redeem the notes |  |  |  | 100.00% |  |  |  |  |
5.50% senior subordinated notes due 2026 | Debt Instrument Redemption Period On or After May 15, 2021 |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 5.50% |  | 5.50% | 5.50% | 5.50% |  |  |
Australia capital loan agreement |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | $ 32.1 |  |  |  | $ 31.7
Maximum credit available |  | $ 50.0 |  | $ 50.0 |  |  |  |  |
Debt term |  |  |  | 5 years |  |  |  |  |
Call period |  |  |  | 90 days |  |  |  |  |
Maximum amount of debt guaranteed by the Company's U.S. parent company |  | 50.0 |  | $ 50.0 |  |  |  |  |
Balance outstanding under credit agreement |  | 41.7 |  | $ 41.7 | 32.1 |  |  |  |
Number of facilities | item |  |  |  | 2 |  |  |  |  |
Australia capital loan agreement | Australian BBSW 30-Day Bill Rate |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Base rate of interest on loans |  |  |  | 30-day Bill Rate |  |  |  |  |
Line of credit basis spread on variable rate (as a percent) |  |  |  | 3.00% |  |  |  |  |
Australia working capital loan agreement |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Maximum credit available |  | 50.0 |  | $ 50.0 |  |  |  |  |
Debt term |  |  |  | 1 year |  |  |  |  |
Call period |  |  |  | 90 days |  |  |  |  |
Maximum amount of debt guaranteed by the Company's U.S. parent company |  | $ 50.0 |  | $ 50.0 |  |  |  |  |
Balance outstanding under credit agreement |  |  |  |  | 0.0 |  |  |  |
Australia working capital loan agreement | Australian BBSW 30-Day Bill Rate |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Base rate of interest on loans |  |  |  | 30-day Bill Rate |  |  |  |  |
Line of credit basis spread on variable rate (as a percent) |  |  |  | 3.00% |  |  |  |  |
Mortgage facilities |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | 458.1 |  |  |  | 423.2
Balance outstanding under credit agreement |  |  |  |  | 458.1 |  |  |  |
Other debt |  |  |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  | $ 51.8 |  |  |  | $ 54.1

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- Definition The amount of demand overdraft lines of credit available under the credit agreement, for specified time periods each year. + References No definition available. + Details
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- Definition Represents the amount of debt reserved for future U.S. acquisitions. + References No definition available. + Details
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- Definition Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be redeemed in the event of a change of control. + References No definition available. + Details
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- Definition Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be repurchased in the event of certain asset sales. + References No definition available. + Details
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- Definition Represents the percentage of the aggregate principal amount of debt instruments that may be redeemed with net proceeds of certain equity offerings. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + 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://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=120400017&loc=d3e572229-122910 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&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://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 + Details
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