XML 34 R23.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Fair Value Measurements (Tables) | 9 Months Ended
--- | ---
Feb. 28, 2018
Fair Value Measurements [Abstract] |
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | February 28, 2018
﻿ |  |  |  |  | Quoted |  | Significant |  |  |
﻿ |  |  |  |  | prices in |  | other |  | Significant
﻿ |  | Carrying |  | active |  | observable |  | unobservable
﻿ |  | value |  | markets |  | inputs |  | inputs
﻿In millions |  | (Fair value) |  | (Level 1) |  | (Level 2) |  | (Level 3)
﻿Assets: |  |  |  |  |  |  |  |  |  |  |  |
﻿Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
﻿Commercial paper |  | $ | 225.0 |  | $ | — |  | $ | 225.0 |  | $ | —
﻿Time deposits |  |  | 150.0 |  |  | 150.0 |  |  | — |  |  | —
﻿Money market securities |  |  | 30.0 |  |  | 30.0 |  |  | — |  |  | —
﻿Total cash equivalents |  | $ | 405.0 |  | $ | 180.0 |  | $ | 225.0 |  | $ | —
﻿Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
﻿Corporate bonds |  | $ | 299.4 |  | $ | — |  | $ | 299.4 |  | $ | —
﻿General obligation municipal bonds |  |  | 1,295.8 |  |  | — |  |  | 1,295.8 |  |  | —
﻿Pre-refunded municipal bonds |  |  | 65.2 |  |  | — |  |  | 65.2 |  |  | —
﻿Revenue municipal bonds |  |  | 845.1 |  |  | — |  |  | 845.1 |  |  | —
﻿U.S. government agency securities |  |  | 395.4 |  |  | — |  |  | 395.4 |  |  | —
﻿Variable rate demand notes |  |  | 854.7 |  |  | — |  |  | 854.7 |  |  | —
﻿Total available-for-sale securities |  | $ | 3,755.6 |  | $ | — |  | $ | 3,755.6 |  | $ | —
﻿Other |  | $ | 17.9 |  | $ | 17.9 |  | $ | — |  | $ | —
﻿Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
﻿Other long-term liabilities |  | $ | 17.9 |  | $ | 17.9 |  | $ | — |  | $ | —
﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | May 31, 2017
﻿ |  |  |  |  | Quoted |  | Significant |  |  |
﻿ |  |  |  |  | prices in |  | other |  | Significant
﻿ |  | Carrying |  | active |  | observable |  | unobservable
﻿ |  | value |  | markets |  | inputs |  | inputs
﻿In millions |  | (Fair value) |  | (Level 1) |  | (Level 2) |  | (Level 3)
﻿Assets: |  |  |  |  |  |  |  |  |  |  |  |
﻿Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
﻿Corporate bonds |  | $ | 210.8 |  | $ | — |  | $ | 210.8 |  | $ | —
﻿General obligation municipal bonds |  |  | 1,442.3 |  |  | — |  |  | 1,442.3 |  |  | —
﻿Pre-refunded municipal bonds |  |  | 55.5 |  |  | — |  |  | 55.5 |  |  | —
﻿Revenue municipal bonds |  |  | 940.9 |  |  | — |  |  | 940.9 |  |  | —
﻿U.S. government agency securities |  |  | 325.8 |  |  | — |  |  | 325.8 |  |  | —
﻿Variable rate demand notes |  |  | 1,637.9 |  |  | — |  |  | 1,637.9 |  |  | —
﻿Total available-for-sale securities |  | $ | 4,613.2 |  | $ | — |  | $ | 4,613.2 |  | $ | —
﻿Other |  | $ | 16.7 |  | $ | 16.7 |  | $ | — |  | $ | —
﻿Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
﻿Other long-term liabilities |  | $ | 16.7 |  | $ | 16.7 |  | $ | — |  | $ | —
﻿

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration