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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified | Total | Preferred Stock | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Key Executive Deferred Compensation | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of year at Jun. 01, 2013 |  | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | $ 11.7 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 102.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 331.1 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (124.3)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (1.9)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at beginning of year at Jun. 01, 2013 | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  |  |  |  |
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward] |  |  |  |  |  |  |  |
Redeemable noncontrolling interests related to DWR acquisition | 0 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromBusinessCombination |  |  |  |  |  |  |
Stock-based compensation expense | 0 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromSharebasedCompensation |  |  |  |  |  |  |
Sale of redeemable noncontrolling interests | 0 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromSaleofInterestinSubsidiaryEquity |  |  |  |  |  |  |
Stock options exercised | 0 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromExerciseofStockOption |  |  |  |  |  |  |
Net income attributable to redeemable noncontrolling interests | 0 us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Repurchase and retirement of common stock |  |  |  | (4.2)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Exercise of stock options |  |  | 0.1 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 8.5 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Stock-based compensation expense |  |  |  | 8.3 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Excess tax benefit for stock-based compensation |  |  |  | 0.7 us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Restricted stock units released |  |  |  | 0.2 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Employee stock purchase plan issuances |  |  |  | 1.1 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Deferred compensation plan |  |  |  | (0.3)us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Directors' fees |  |  |  | 0.3 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Net income attributable to Herman Miller, Inc. | (38.7)us-gaap_NetIncomeLoss |  |  |  | (38.7)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Dividends declared, per share | $ 0.390 us-gaap_CommonStockDividendsPerShareDeclared |  |  |  |  |  |  |
Dividends declared on common stock (per share - 2015: $0.420; 2014; $0.390) |  |  |  |  | (23.2)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Other comprehensive income (loss) | 90.1 us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | 90.1 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Deferred compensation plan |  |  |  |  |  |  | 0.2 mlhr_StockIssuedDuringPeriodValueDeferredCompensationPlan / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember |
Noncontrolling interests related to DWR acquisition |  |  |  |  |  |  |  | 0 us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interests |  |  |  |  |  |  |  | 0 us-gaap_MinorityInterestDecreaseFromRedemptions / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at end of period at Mar. 01, 2014 | 362.6 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 11.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 117.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 269.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (34.2)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (1.7)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Redeemable noncontrolling interests at Mar. 01, 2014 | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  |  |  |  |
Balance at beginning of year at May. 31, 2014 |  | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 11.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 122.4 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 277.4 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (37.9)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (1.7)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at beginning of year at May. 31, 2014 | 0 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  |  |  |  |
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward] |  |  |  |  |  |  |  |
Redeemable noncontrolling interests related to DWR acquisition | 25.7 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromBusinessCombination |  |  |  |  |  |  |
Stock-based compensation expense | 0.9 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromSharebasedCompensation |  |  |  |  |  |  |
Sale of redeemable noncontrolling interests | 0.1 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromSaleofInterestinSubsidiaryEquity |  |  |  |  |  |  |
Stock options exercised | 0.8 mlhr_RedeemableNoncontrollingInterestEquityIncreasefromExerciseofStockOption |  |  |  |  |  |  |
Net income attributable to redeemable noncontrolling interests | 0.2 us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Repurchase and retirement of common stock |  |  |  | (3.3)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Exercise of stock options |  |  | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 5.6 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Stock-based compensation expense |  |  |  | 7.2 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Excess tax benefit for stock-based compensation |  |  |  | 0.3 us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Restricted stock units released |  |  |  | 0.2 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Employee stock purchase plan issuances |  |  |  | 1.2 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Deferred compensation plan |  |  |  | (0.5)us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Directors' fees |  |  |  | 0.4 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Net income attributable to Herman Miller, Inc. | 74.1 us-gaap_NetIncomeLoss |  |  |  | 74.1 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Dividends declared, per share | $ 0.420 us-gaap_CommonStockDividendsPerShareDeclared |  |  |  |  |  |  |
Dividends declared on common stock (per share - 2015: $0.420; 2014; $0.390) |  |  |  |  | (25.2)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Other comprehensive income (loss) | (8.3)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  | (8.3)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Deferred compensation plan |  |  |  |  |  |  | 0.5 mlhr_StockIssuedDuringPeriodValueDeferredCompensationPlan / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember |
Noncontrolling interests related to DWR acquisition |  |  |  |  |  |  |  | 5.8 us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interests |  |  |  |  |  |  |  | (5.8)us-gaap_MinorityInterestDecreaseFromRedemptions / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at end of period at Feb. 28, 2015 | 424.3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 11.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 133.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 326.3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (46.2)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (1.2)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_DeferredCompensationShareBasedPaymentsMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Redeemable noncontrolling interests at Feb. 28, 2015 | $ 27.7 us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount |  |  |  |  |  |  |

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