For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various post employment and postretirement benefits provided to former or inactive employees, their beneficiaries, and covered dependents that is payable after one year (or beyond the operating cycle if longer. Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet due to materiality considerations. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

No definition available.

Revision to Previously Reported Financial Information - Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Contract assets, net of allowance for expected credit losses	$ 262,231		$ 277,734		$ 309,196
Total current assets	2,440,688		2,904,333		2,430,602
Property, plant and equipment, net of accumulated depreciation	526,101		556,873		547,471
Other assets, net of allowance for expected credit losses	227,145		221,426		235,530
Total assets	4,818,669		5,314,677		4,778,378
Accrued liabilities	422,161		463,222		397,012
Contract liabilities	209,092		194,227		219,633
Debt due within one year	9,599		8,995		9,214
Total current liabilities	1,069,716		1,141,633		1,090,363
Total debt due after one year	1,307,149		1,717,911		1,373,124
Retirement obligations and other liabilities	497,724		517,566	$ 543,221	529,946
Retained earnings	3,677,117		3,670,543	3,640,227	3,610,470
Accumulated other comprehensive loss	600,143		609,625	635,292	653,916
Total Flowserve Corporation shareholders’ equity	1,740,984		1,730,991	1,671,921	1,618,431
Total equity	1,770,692	$ 1,741,786	1,761,321	1,702,343	1,646,210	$ 1,639,833	$ 1,772,341
Total liabilities and equity	$ 4,818,669		5,314,677		4,778,378
Foreign Currency Transactions
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Retirement obligations and other liabilities			1,500
Retained earnings			14,000
Accumulated other comprehensive loss			15,500
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Contract assets, net of allowance for expected credit losses					309,149
Total current assets					2,430,555
Property, plant and equipment, net of accumulated depreciation					541,768
Other assets, net of allowance for expected credit losses					218,604
Total assets					4,755,702
Accrued liabilities					401,041
Contract liabilities					214,135
Debt due within one year					9,058
Total current liabilities					1,088,738
Total debt due after one year					1,367,478
Retirement obligations and other liabilities			516,087	541,721	470,400
Retained earnings			3,656,449	3,625,291	3,643,868
Accumulated other comprehensive loss			594,052	618,856	643,173
Total Flowserve Corporation shareholders’ equity			1,732,470	1,673,421	1,662,572
Total equity			1,762,800	1,703,843	1,690,351
Total liabilities and equity					4,755,702
Adjustments \| Foreign Currency Transactions
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Retirement obligations and other liabilities			1,479	1,500
Retained earnings			14,094	14,936
Accumulated other comprehensive loss			15,573	(16,436)
Total Flowserve Corporation shareholders’ equity			(1,479)	(1,500)
Total equity			$ (1,479)	$ (1,500)
Adjustments \| Operating Lease, Right-Of-Use Asset And Liability
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Property, plant and equipment, net of accumulated depreciation					5,703
Total debt due after one year					5,646
Adjustments \| Asbestos Receivables And Expected Insurance Proceeds
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other assets, net of allowance for expected credit losses					16,926
Adjustments \| Restructuring Reserves
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accrued liabilities					(4,029)
Adjustments \| Estimated Costs Under The Over Time Revenue Recognition Model
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Contract liabilities					5,498
Adjustments \| IBNR Reserves
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Retirement obligations and other liabilities					59,546
Adjustments \| Immaterial Errors
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Retained earnings					(33,398)
Adjustments \| Accounting Errors
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Contract assets, net of allowance for expected credit losses					47
Total current assets					47
Total assets					22,676
Debt due within one year					156
Total current liabilities					1,625
Accumulated other comprehensive loss					(10,743)
Total Flowserve Corporation shareholders’ equity					(44,141)
Total equity					(44,141)
Total liabilities and equity					$ 22,676