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Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Supplemental Guarantor Information [Line Items] |  |  |
Net cash provided by operating activities | $ 332.3 | $ 376.2 |
Cash flows used in investing activities: |  |  |
Capital expenditures | (33.6) | (36.8) |
Net cash used in investing activities | (33.6) | (36.8) |
Cash flows used in financing activities: |  |  |
Proceeds from borrowings under revolving credit facilities | 488.1 | 67.7 |
Repayments of borrowings under revolving credit facilities | (474.4) | (13.7) |
Repayments of long-term debt | (7.5) | (7.5) |
Proceeds from issuance of long-term debt | 0.0 | 2,083.0 |
Payments to extinguish long-term debt | 0.0 | (2,121.3) |
Payments of debt financing costs | (1.0) | (9.6) |
Net change in accounts payable-inventory financing | (110.4) | (85.1) |
Premium payments on interest rate cap agreements | (12.6) | 0.0 |
Proceeds from stock option exercises | 19.9 | 7.4 |
Proceeds from Coworker Stock Purchase Plan | 5.4 | 4.7 |
Repurchases of common stock | (176.4) | (359.4) |
Payment of incentive compensation plan withholding taxes | (8.7) | (42.0) |
Dividends | (63.8) | (50.3) |
Repayment of intercompany loan | 0.0 | 0.0 |
Other | 3.2 | (0.6) |
Distributions and advances from (to) affiliates | 0.0 | 0.0 |
Net cash used in financing activities | (338.2) | (526.7) |
Effect of exchange rate changes on cash and cash equivalents | (4.0) | 2.6 |
Net decrease in cash and cash equivalents | (43.5) | (184.7) |
Cash and cash equivalents—beginning of period | 144.2 | 263.7 | $ 263.7
Cash and cash equivalents—end of period | 100.7 | 79.0 | 144.2
Consolidating Adjustments |  |  |
Supplemental Guarantor Information [Line Items] |  |  |
Net cash provided by operating activities | (14.0) | (33.9) |
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 facilities | 0.0 | 0.0 |
Repayments of borrowings under revolving credit facilities | 0.0 | 0.0 |
Repayments of long-term debt | 0.0 | 0.0 |
Proceeds from issuance of long-term debt |  | 0.0 |
Payments to extinguish long-term debt |  | 0.0 |
Payments of debt financing costs | 0.0 | 0.0 |
Net change in accounts payable-inventory financing | 0.0 | 0.0 |
Premium payments on interest rate cap agreements | 0.0 |  |
Proceeds from stock option exercises | 0.0 | 0.0 |
Proceeds from Coworker Stock Purchase Plan | 0.0 | 0.0 |
Repurchases of common stock | 0.0 | 0.0 |
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0 |
Dividends | 0.0 | 0.0 |
Repayment of intercompany loan | 0.0 | 0.0 |
Other | 0.0 | 0.0 |
Distributions and advances from (to) affiliates | (6.7) | 7.4 |
Net cash used in financing activities | (6.7) | 7.4 |
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0 |
Net decrease in cash and cash equivalents | (20.7) | (26.5) |
Cash and cash equivalents—beginning of period | (1.9) | 0.0 | 0.0
Cash and cash equivalents—end of period | (22.6) | (26.5) | (1.9)
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 facilities | 0.0 | 0.0 |
Repayments of borrowings under revolving credit facilities | 0.0 | 0.0 |
Repayments of long-term debt | 0.0 | 0.0 |
Proceeds from issuance of long-term debt |  | 0.0 |
Payments to extinguish long-term debt |  | 0.0 |
Payments of debt financing costs | 0.0 | 0.0 |
Net change in accounts payable-inventory financing | 0.0 | 0.0 |
Premium payments on interest rate cap agreements | 0.0 |  |
Proceeds from stock option exercises | 0.0 | 0.0 |
Proceeds from Coworker Stock Purchase Plan | 0.0 | 0.0 |
Repurchases of common stock | (176.4) | (359.4) |
Payment of incentive compensation plan withholding taxes | (8.7) | 0.0 |
Dividends | (63.8) | (50.3) |
Repayment of intercompany loan | 0.0 | 0.0 |
Other | 0.0 | 0.0 |
Distributions and advances from (to) affiliates | 248.9 | 409.7 |
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 | 0.0
Cash and cash equivalents—end of period | 0.0 | 0.0 | 0.0
Subsidiary Issuer | Reportable Legal Entities |  |  |
Supplemental Guarantor Information [Line Items] |  |  |
Net cash provided by operating activities | (71.8) | (22.1) |
Cash flows used in investing activities: |  |  |
Capital expenditures | (24.2) | (26.6) |
Net cash used in investing activities | (24.2) | (26.6) |
Cash flows used in financing activities: |  |  |
Proceeds from borrowings under revolving credit facilities | 467.5 | 54.0 |
Repayments of borrowings under revolving credit facilities | (467.5) | 0.0 |
Repayments of long-term debt | (7.5) | (7.5) |
Proceeds from issuance of long-term debt |  | 2,083.0 |
Payments to extinguish long-term debt |  | (2,121.3) |
Payments of debt financing costs | (1.0) | (9.6) |
Net change in accounts payable-inventory financing | (0.9) | (1.2) |
Premium payments on interest rate cap agreements | (12.6) |  |
Proceeds from stock option exercises | 19.9 | 7.4 |
Proceeds from Coworker Stock Purchase Plan | 5.4 | 4.7 |
Repurchases of common stock | 0.0 | 0.0 |
Payment of incentive compensation plan withholding taxes | 0.0 | (16.0) |
Dividends | 0.0 | 0.0 |
Repayment of intercompany loan | 0.0 | 0.0 |
Other | 3.6 | 0.0 |
Distributions and advances from (to) affiliates | 46.3 | (100.5) |
Net cash used in financing activities | 53.2 | (107.0) |
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0 |
Net decrease in cash and cash equivalents | (42.8) | (155.7) |
Cash and cash equivalents—beginning of period | 113.7 | 222.7 | 222.7
Cash and cash equivalents—end of period | 70.9 | 67.0 | 113.7
Guarantor Subsidiaries |  |  |
Cash flows used in financing activities: |  |  |
Payments of debt financing costs |  | 0.0 |
Guarantor Subsidiaries | Reportable Legal Entities |  |  |
Supplemental Guarantor Information [Line Items] |  |  |
Net cash provided by operating activities | 343.9 | 391.5 |
Cash flows used in investing activities: |  |  |
Capital expenditures | (1.9) | (4.3) |
Net cash used in investing activities | (1.9) | (4.3) |
Cash flows used in financing activities: |  |  |
Proceeds from borrowings under revolving credit facilities | 0.0 | 0.0 |
Repayments of borrowings under revolving credit facilities | 0.0 | 0.0 |
Repayments of long-term debt | 0.0 | 0.0 |
Proceeds from issuance of long-term debt |  | 0.0 |
Payments to extinguish long-term debt |  | 0.0 |
Payments of debt financing costs | 0.0 |  |
Net change in accounts payable-inventory financing | (100.8) | (83.9) |
Premium payments on interest rate cap agreements | 0.0 |  |
Proceeds from stock option exercises | 0.0 | 0.0 |
Proceeds from Coworker Stock Purchase Plan | 0.0 | 0.0 |
Repurchases of common stock | 0.0 | 0.0 |
Payment of incentive compensation plan withholding taxes | 0.0 | (24.0) |
Dividends | 0.0 | 0.0 |
Repayment of intercompany loan | 47.5 | 34.3 |
Other | (0.2) | (0.1) |
Distributions and advances from (to) affiliates | (288.5) | (316.6) |
Net cash used in financing activities | (342.0) | (390.3) |
Effect of exchange rate changes on cash and cash equivalents | 0.0 | 0.0 |
Net decrease in cash and cash equivalents | 0.0 | (3.1) |
Cash and cash equivalents—beginning of period | 0.0 | 3.1 | 3.1
Cash and cash equivalents—end of period | 0.0 | 0.0 | 0.0
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |
Supplemental Guarantor Information [Line Items] |  |  |
Net cash provided by operating activities | 74.2 | 40.7 |
Cash flows used in investing activities: |  |  |
Capital expenditures | (7.5) | (5.9) |
Net cash used in investing activities | (7.5) | (5.9) |
Cash flows used in financing activities: |  |  |
Proceeds from borrowings under revolving credit facilities | 20.6 | 13.7 |
Repayments of borrowings under revolving credit facilities | (6.9) | (13.7) |
Repayments of long-term debt | 0.0 | 0.0 |
Proceeds from issuance of long-term debt |  | 0.0 |
Payments to extinguish long-term debt |  | 0.0 |
Payments of debt financing costs | 0.0 | 0.0 |
Net change in accounts payable-inventory financing | (8.7) | 0.0 |
Premium payments on interest rate cap agreements | 0.0 |  |
Proceeds from stock option exercises | 0.0 | 0.0 |
Proceeds from Coworker Stock Purchase Plan | 0.0 | 0.0 |
Repurchases of common stock | 0.0 | 0.0 |
Payment of incentive compensation plan withholding taxes | 0.0 | (2.0) |
Dividends | 0.0 | 0.0 |
Repayment of intercompany loan | (47.5) | (34.3) |
Other | (0.2) | (0.5) |
Distributions and advances from (to) affiliates | 0.0 | 0.0 |
Net cash used in financing activities | (42.7) | (36.8) |
Effect of exchange rate changes on cash and cash equivalents | (4.0) | 2.6 |
Net decrease in cash and cash equivalents | 20.0 | 0.6 |
Cash and cash equivalents—beginning of period | 32.4 | 37.9 | 37.9
Cash and cash equivalents—end of period | 52.4 | 38.5 | 32.4
Co-Issuer | 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 facilities | 0.0 | 0.0 |
Repayments of borrowings under revolving credit facilities | 0.0 | 0.0 |
Repayments of long-term debt | 0.0 | 0.0 |
Proceeds from issuance of long-term debt |  | 0.0 |
Payments to extinguish long-term debt |  | 0.0 |
Payments of debt financing costs | 0.0 | 0.0 |
Net change in accounts payable-inventory financing | 0.0 | 0.0 |
Premium payments on interest rate cap agreements | 0.0 |  |
Proceeds from stock option exercises | 0.0 | 0.0 |
Proceeds from Coworker Stock Purchase Plan | 0.0 | 0.0 |
Repurchases of common stock | 0.0 | 0.0 |
Payment of incentive compensation plan withholding taxes | 0.0 | 0.0 |
Dividends | 0.0 | 0.0 |
Repayment of intercompany loan | 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 | 0.0
Cash and cash equivalents—end of period | $ 0.0 | $ 0.0 | $ 0.0

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