Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 110.4	$ 256.0
Accounts and notes receivable, net of allowances of $96.5 and $112.4, respectively	1,205.9us-gaap_AccountsAndNotesReceivableNet	1,285.0us-gaap_AccountsAndNotesReceivableNet
Inventories	1,130.4us-gaap_InventoryNet	1,195.1us-gaap_InventoryNet
Other current assets	366.8us-gaap_OtherAssetsCurrent	361.6us-gaap_OtherAssetsCurrent
Disposal Group, Including Discontinued Operation, Assets, Current	80.6	134.4
Total current assets	2,894.1us-gaap_AssetsCurrent	3,232.1us-gaap_AssetsCurrent
Property, plant and equipment, net	950.0us-gaap_PropertyPlantAndEquipmentNet	1,044.3us-gaap_PropertyPlantAndEquipmentNet
Other assets
Goodwill	4,741.9us-gaap_Goodwill	4,860.7us-gaap_Goodwill
Intangibles, net	1,608.1	1,749.9
Other non-current assets	436.2us-gaap_OtherAssetsNoncurrent	390.0us-gaap_OtherAssetsNoncurrent
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	24.9	466.3
Total other assets	6,811.1pnr_TotalOtherAssets	7,466.9pnr_TotalOtherAssets
Total assets	10,655.2us-gaap_Assets	11,743.3us-gaap_Assets
Current liabilities
Current maturities of long-term debt and short-term borrowings	6.7us-gaap_DebtCurrent	2.5us-gaap_DebtCurrent
Accounts payable	583.1us-gaap_AccountsPayableCurrent	576.9us-gaap_AccountsPayableCurrent
Employee compensation and benefits	305.5	312.4
Other current liabilities	709.1us-gaap_OtherAccruedLiabilitiesCurrent	645.9us-gaap_OtherAccruedLiabilitiesCurrent
Disposal Group, Including Discontinued Operation, Liabilities, Current	35.1	72.5
Total current liabilities	1,639.5us-gaap_LiabilitiesCurrent	1,610.2us-gaap_LiabilitiesCurrent
Other liabilities
Long-term debt	2,997.4us-gaap_LongTermDebtNoncurrent	2,547.9us-gaap_LongTermDebtNoncurrent
Pension and other post-retirement compensation and benefits	322.0	320.2
Deferred tax liabilities	528.3	557.0
Other non-current liabilities	497.7us-gaap_OtherLiabilitiesNoncurrent	456.4us-gaap_OtherLiabilitiesNoncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	6.5	33.9
Total liabilities	5,991.4us-gaap_Liabilities	5,525.6us-gaap_Liabilities
Equity
Ordinary shares $0.01 and CHF 0.50 par value, 426.0 and 213.0 authorized, 202.4 and 213.0 issued at December 31, 2014 and December 31, 2013, respectively	2.0us-gaap_CommonStockValueOutstanding	113.5us-gaap_CommonStockValueOutstanding
Ordinary shares held in treasury, 19.9 and 15.6 shares at December 31, 2014 and December 31, 2013, respectively	(1,251.9)us-gaap_TreasuryStockValue	(875.1)us-gaap_TreasuryStockValue
Additional paid-in capital	4,250.0us-gaap_AdditionalPaidInCapital	5,071.4us-gaap_AdditionalPaidInCapital
Retained earnings	2,044.0	1,829.1
Accumulated other comprehensive loss	(380.3)	(43.6)
Shareholders’ equity attributable to Pentair plc	4,663.8us-gaap_StockholdersEquity	6,095.3us-gaap_StockholdersEquity
Noncontrolling interest	0us-gaap_MinorityInterest	122.4us-gaap_MinorityInterest
Total equity	4,663.8	6,217.7
Total liabilities and equity	$ 10,655.2	$ 11,743.3

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