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Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | $ 414.5 | $ 332.3
Cash flows used in investing activities: |  |
Capital expenditures | (43.9) | (33.6)
Acquisition of business, net of cash acquired | (75.0) | 0.0
Net cash used in investing activities | (118.9) | (33.6)
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 891.0 | 488.1
Repayments of borrowings under revolving credit facility | (815.0) | (474.4)
Repayments of long-term debt | (9.6) | (7.5)
Net change in accounts payable-inventory financing | 36.3 | (110.4)
Repurchases of common stock | (332.2) | (176.4)
Payment of incentive compensation plan withholding taxes | (11.6) | (8.7)
Dividend payments | (86.3) | (63.8)
Capital contributions | 0.0 | 0.0
Other | 22.2 | 14.9
Distributions and advances from (to) affiliates | 0.0 | 0.0
Net cash used in financing activities | (305.2) | (338.2)
Effect of exchange rate changes on cash and cash equivalents | (1.7) | (4.0)
Net decrease in cash and cash equivalents | (11.3) | (43.5)
Cash and cash equivalents—beginning of period | 205.8 | 144.2
Cash and cash equivalents—end of period | 194.5 | 100.7
Consolidating Adjustments |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | 10.7 | (14.0)
Cash flows used in investing activities: |  |
Capital expenditures | 0.0 | 0.0
Acquisition of business, net of cash acquired | 0.0 |
Net cash used in investing activities | 0.0 | 0.0
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 0.0 | 0.0
Repayments of borrowings under revolving credit facility | 0.0 | 0.0
Repayments of long-term debt | 0.0 | 0.0
Net change in accounts payable-inventory financing | 0.0 | 0.0
Repurchases of common stock | 0.0 | 0.0
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0
Dividend payments | 0.0 | 0.0
Capital contributions | 0.0 | 0.0
Other | 0.0 | 0.0
Distributions and advances from (to) affiliates | 6.2 | (6.7)
Net cash used in financing activities | 6.2 | (6.7)
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
Net decrease in cash and cash equivalents | 16.9 | (20.7)
Cash and cash equivalents—beginning of period | (16.9) | (1.9)
Cash and cash equivalents—end of period | 0.0 | (22.6)
Parent Guarantor |  |
Cash flows used in investing activities: |  |
Acquisition of business, net of cash acquired | 0.0 |
Parent Guarantor | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | 0.0 | 0.0
Cash flows used in investing activities: |  |
Capital expenditures | 0.0 | 0.0
Net cash used in investing activities | 0.0 | 0.0
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 0.0 | 0.0
Repayments of borrowings under revolving credit facility | 0.0 | 0.0
Repayments of long-term debt | 0.0 | 0.0
Net change in accounts payable-inventory financing | 0.0 | 0.0
Repurchases of common stock | (332.2) | (176.4)
Payment of incentive compensation plan withholding taxes | (11.6) | (8.7)
Dividend payments | (86.3) | (63.8)
Capital contributions | 0.0 | 0.0
Other | 0.0 | 0.0
Distributions and advances from (to) affiliates | 430.1 | 248.9
Net cash used in financing activities | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
Net decrease in cash and cash equivalents | 0.0 | 0.0
Cash and cash equivalents—beginning of period | 0.0 | 0.0
Cash and cash equivalents—end of period | 0.0 | 0.0
Subsidiary Issuer |  |
Cash flows used in investing activities: |  |
Acquisition of business, net of cash acquired | 0.0 |
Subsidiary Issuer | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | (7.0) | (71.8)
Cash flows used in investing activities: |  |
Capital expenditures | (31.2) | (24.2)
Net cash used in investing activities | (31.2) | (24.2)
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 891.0 | 467.5
Repayments of borrowings under revolving credit facility | (815.0) | (467.5)
Repayments of long-term debt | (7.5) | (7.5)
Net change in accounts payable-inventory financing | 0.3 | (0.9)
Repurchases of common stock | 0.0 | 0.0
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0
Dividend payments | 0.0 | 0.0
Capital contributions | (76.0) | 0.0
Other | 22.4 | 15.3
Distributions and advances from (to) affiliates | (55.4) | 46.3
Net cash used in financing activities | (40.2) | 53.2
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
Net decrease in cash and cash equivalents | (78.4) | (42.8)
Cash and cash equivalents—beginning of period | 176.0 | 113.7
Cash and cash equivalents—end of period | 97.6 | 70.9
Guarantor Subsidiaries |  |
Cash flows used in investing activities: |  |
Acquisition of business, net of cash acquired | 0.0 |
Guarantor Subsidiaries | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | 317.0 | 343.9
Cash flows used in investing activities: |  |
Capital expenditures | (8.0) | (1.9)
Net cash used in investing activities | (8.0) | (1.9)
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 0.0 | 0.0
Repayments of borrowings under revolving credit facility | 0.0 | 0.0
Repayments of long-term debt | 0.0 | 0.0
Net change in accounts payable-inventory financing | 45.1 | (100.8)
Repurchases of common stock | 0.0 | 0.0
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0
Dividend payments | 0.0 | 0.0
Capital contributions | 0.0 | 47.5
Other | (0.2) | (0.2)
Distributions and advances from (to) affiliates | (330.1) | (288.5)
Net cash used in financing activities | (285.2) | (342.0)
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
Net decrease in cash and cash equivalents | 23.8 | 0.0
Cash and cash equivalents—beginning of period | 0.0 | 0.0
Cash and cash equivalents—end of period | 23.8 | 0.0
Non-Guarantor Subsidiaries |  |
Cash flows used in investing activities: |  |
Acquisition of business, net of cash acquired | (75.0) |
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | 93.8 | 74.2
Cash flows used in investing activities: |  |
Capital expenditures | (4.7) | (7.5)
Net cash used in investing activities | (79.7) | (7.5)
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 0.0 | 20.6
Repayments of borrowings under revolving credit facility | 0.0 | (6.9)
Repayments of long-term debt | (2.1) | 0.0
Net change in accounts payable-inventory financing | (9.1) | (8.7)
Repurchases of common stock | 0.0 | 0.0
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0
Dividend payments | 0.0 | 0.0
Capital contributions | 76.0 | (47.5)
Other | 0.0 | (0.2)
Distributions and advances from (to) affiliates | (50.8) | 0.0
Net cash used in financing activities | 14.0 | (42.7)
Effect of exchange rate changes on cash and cash equivalents | (1.7) | (4.0)
Net decrease in cash and cash equivalents | 26.4 | 20.0
Cash and cash equivalents—beginning of period | 46.7 | 32.4
Cash and cash equivalents—end of period | 73.1 | 52.4
Affiliated Entity |  |
Cash flows used in investing activities: |  |
Acquisition of business, net of cash acquired | 0.0 |
Affiliated Entity | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Net cash provided by operating activities | 0.0 | 0.0
Cash flows used in investing activities: |  |
Capital expenditures | 0.0 | 0.0
Net cash used in investing activities | 0.0 | 0.0
Cash flows used in financing activities: |  |
Proceeds from borrowings under revolving credit facility | 0.0 | 0.0
Repayments of borrowings under revolving credit facility | 0.0 | 0.0
Repayments of long-term debt | 0.0 | 0.0
Net change in accounts payable-inventory financing | 0.0 | 0.0
Repurchases of common stock | 0.0 | 0.0
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0
Dividend payments | 0.0 | 0.0
Capital contributions | 0.0 | 0.0
Other | 0.0 | 0.0
Distributions and advances from (to) affiliates | 0.0 | 0.0
Net cash used in financing activities | 0.0 | 0.0
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0
Net decrease in cash and cash equivalents | 0.0 | 0.0
Cash and cash equivalents—beginning of period | 0.0 | 0.0
Cash and cash equivalents—end of period | $ 0.0 | $ 0.0

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