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Supplemental Financial Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Supplemental Cash Flow Information [Abstract] |  |  |
Cash paid for income taxes | $ 25.9 | $ 48.4 | $ 25.4
Cash paid for interest on borrowings | 85.3 | 82.5 | 52.9
Allowance for Doubtful Accounts |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balances at Beginning of Year | 2.1 | 2.5 | 2.6
Charged to Cost and Expense | 0.2 | 0.2 | 0.1
Deductions | (0.1) | (0.6) | (0.2)
Balance at End of Year | 2.2 | 2.1 | 2.5
Valuation Allowance of Deferred Tax Assets |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balances at Beginning of Year | 210.1 | 161.8 | 116.5
Charged to Cost and Expense | 36.2 | 15.2 | 5.5
Charged to Other Accounts | 0.0 | 37.6 | 47.8
Deductions | (41.8) | (4.5) | (8.0)
Balance at End of Year | $ 204.5 | $ 210.1 | $ 161.8

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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