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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY (USD $) In Millions, unless otherwise specified | Total | Common Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member] Exelis and Xylem [Member] | Accumulated Other Comprehensive Loss [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | ---
Cumulative translation adjustment, beginning balance at Dec. 31, 2011 |  |  |  |  | $ (96.4)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Unrealized (loss) gain on investment securities, beginning balance at Dec. 31, 2011 |  |  |  |  | (1.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Noncontrolling interests, beginning balance at Dec. 31, 2011 |  |  |  |  |  | 0 us-gaap_MinorityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Total shareholders’ equity, beginning balance at Dec. 31, 2011 | 694.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |  |  |  |
Postretirement benefit plans, beginning balance at Dec. 31, 2011 |  |  |  |  | (153.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Common stock, beginning balance at Dec. 31, 2011 |  | 93.1 us-gaap_CommonStockValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Retained earnings, beginning balance at Dec. 31, 2011 |  |  | 852.6 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Common stock, beginning balance at Dec. 31, 2011 |  | 93.1 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Share repurchases |  | (5.2)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Activity from stock incentive plans |  | 4.0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 74.1 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases |  | (5.2)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (111.6)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Net income | 125.4 us-gaap_NetIncomeLoss |  | 125.4 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Cash dividends declared on common stock |  |  | (34.2)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Activity from stock incentive plans |  | 4.0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 74.1 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases |  | (5.2)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (111.6)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Distribution of Exelis and Xylem |  |  |  | (7.3)itt_DistributionOfSegmentRetainedEarnings / us-gaap_StatementBusinessSegmentsAxis = itt_ExelisAndXylemMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Net change in postretirement benefit plans | (42.3)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |  |  |  | (42.3)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net cumulative translation adjustment |  |  |  |  | 4.7 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net change in unrealized gain (loss) on investment securities | 1.0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |  |  |  | 1.0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Total accumulated other comprehensive loss |  |  |  |  | (287.5)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Reclassification of noncontrolling interests |  |  |  |  |  | 0 itt_ReclassificationOfNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net Income (Loss) Attributable to Noncontrolling Interest | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interests |  |  | (0.2)us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | 0 us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Other |  |  |  |  |  | 0 itt_ChaneInEquityFromNoncontrollingInterestAttributableToOther / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net change in common stock | (1.2)itt_CommonStockPeriodIncreaseDecrease |  |  |  |  |
Net change in retained earnings | 46.2 itt_RetainedEarningsPeriodIncreaseDecrease |  |  |  |  |
Net change in accumulated other comprehensive loss | (36.6)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |
Net change in noncontrolling interests | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  |  |
Cumulative translation adjustments, ending balance at Dec. 31, 2012 |  |  |  |  | (91.7)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Unrealized (loss) gain on investment securities, ending balance at Dec. 31, 2012 |  |  |  |  | (0.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Noncontrolling interests, ending balance at Dec. 31, 2012 |  |  |  |  |  | 0 us-gaap_MinorityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Total shareholders’ equity, ending balance at Dec. 31, 2012 | 703.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |  |  |  |
Postretirement benefit plans, ending balance at Dec. 31, 2012 |  |  |  |  | (195.5)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Common stock, ending balance at Dec. 31, 2012 |  | 91.9 us-gaap_CommonStockValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Retained earnings, ending balance at Dec. 31, 2012 |  |  | 898.8 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Common stock, ending balance at Dec. 31, 2012 |  | 91.9 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Share repurchases | (3.1)us-gaap_StockRepurchasedDuringPeriodShares | (3.2)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Activity from stock incentive plans |  | 2.3 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 54.4 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases | (85.2)us-gaap_StockRepurchasedDuringPeriodValue | (3.2)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (84.7)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Net income | 488.5 us-gaap_NetIncomeLoss |  | 488.5 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Cash dividends declared on common stock |  |  | (36.7)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Activity from stock incentive plans |  | 2.3 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 54.4 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases | (85.2)us-gaap_StockRepurchasedDuringPeriodValue | (3.2)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (84.7)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Net change in postretirement benefit plans | 66.3 us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |  |  |  | 66.3 us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net cumulative translation adjustment |  |  |  |  | 10.9 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net change in unrealized gain (loss) on investment securities | 0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Total accumulated other comprehensive loss |  |  |  |  | (210.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Reclassification of noncontrolling interests |  |  |  |  |  | 3.9 itt_ReclassificationOfNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net Income (Loss) Attributable to Noncontrolling Interest | 2.4 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  | 2.4 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interests |  |  |  |  |  | 0 us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Other |  |  |  |  |  | (0.4)itt_ChaneInEquityFromNoncontrollingInterestAttributableToOther / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net change in common stock | (0.9)itt_CommonStockPeriodIncreaseDecrease |  |  |  |  |
Net change in retained earnings | 421.5 itt_RetainedEarningsPeriodIncreaseDecrease |  |  |  |  |
Net change in accumulated other comprehensive loss | 77.2 us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |
Net change in noncontrolling interests | 5.9 us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  |  |
Cumulative translation adjustments, ending balance at Dec. 31, 2013 | (80.8)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax |  |  |  | (80.8)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Unrealized (loss) gain on investment securities, ending balance at Dec. 31, 2013 | (0.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |  |  |  | (0.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Noncontrolling interests, ending balance at Dec. 31, 2013 | 5.9 us-gaap_MinorityInterest |  |  |  |  | 5.9 us-gaap_MinorityInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Total shareholders’ equity, ending balance at Dec. 31, 2013 | 1,206.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |  |  |  |
Postretirement benefit plans, ending balance at Dec. 31, 2013 | (129.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax |  |  |  | (129.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Common stock, ending balance at Dec. 31, 2013 | 91.0 us-gaap_CommonStockValue | 91.0 us-gaap_CommonStockValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Retained earnings, ending balance at Dec. 31, 2013 | 1,320.3 us-gaap_RetainedEarningsAccumulatedDeficit |  | 1,320.3 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Common stock, ending balance at Dec. 31, 2013 | 104.0 us-gaap_CommonStockSharesIssued | 91.0 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Activity from stock incentive plans |  | 1.4 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Share repurchases | (1.1)us-gaap_StockRepurchasedDuringPeriodShares | (1.4)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Activity from stock incentive plans |  | 1.4 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 38.2 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases | (50.0)us-gaap_StockRepurchasedDuringPeriodValue | (1.4)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (58.8)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Net income |  |  | 184.5 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Cash dividends declared on common stock |  |  | (40.6)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Activity from stock incentive plans |  | 1.4 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 38.2 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Share repurchases | (50.0)us-gaap_StockRepurchasedDuringPeriodValue | (1.4)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (58.8)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |
Distribution of Exelis and Xylem |  |  |  | 0 itt_DistributionOfSegmentRetainedEarnings / us-gaap_StatementBusinessSegmentsAxis = itt_ExelisAndXylemMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Net change in postretirement benefit plans | (15.0)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |  |  |  | (15.0)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net cumulative translation adjustment |  |  |  |  | (95.9)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Net change in unrealized gain (loss) on investment securities | 0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Total accumulated other comprehensive loss |  |  |  |  | (321.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Reclassification of noncontrolling interests |  |  |  |  |  | 0 itt_ReclassificationOfNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net Income (Loss) Attributable to Noncontrolling Interest | 2.3 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  | 2.3 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interests |  |  | 1.5 us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | (2.9)us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Other |  |  |  |  |  | 0.1 itt_ChaneInEquityFromNoncontrollingInterestAttributableToOther / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net change in common stock | 0 itt_CommonStockPeriodIncreaseDecrease |  |  |  |  |
Net change in retained earnings | 124.8 itt_RetainedEarningsPeriodIncreaseDecrease |  |  |  |  |
Net change in accumulated other comprehensive loss | (110.9)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |
Net change in noncontrolling interests | (0.5)us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  |  |
Cumulative translation adjustments, ending balance at Dec. 31, 2014 | (176.7)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax |  |  |  | (176.7)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Unrealized (loss) gain on investment securities, ending balance at Dec. 31, 2014 | (0.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax |  |  |  | (0.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Noncontrolling interests, ending balance at Dec. 31, 2014 | 5.4 us-gaap_MinorityInterest |  |  |  |  |
Total shareholders’ equity, ending balance at Dec. 31, 2014 | 1,220.3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |  |  |  |
Postretirement benefit plans, ending balance at Dec. 31, 2014 | (144.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax |  |  |  | (144.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Common stock, ending balance at Dec. 31, 2014 | 91.0 us-gaap_CommonStockValue | 91.0 us-gaap_CommonStockValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Retained earnings, ending balance at Dec. 31, 2014 | $ 1,445.1 us-gaap_RetainedEarningsAccumulatedDeficit |  |  |  |  |
Common stock, ending balance at Dec. 31, 2014 | 104.3 us-gaap_CommonStockSharesIssued | 91.0 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |

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