Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 75,239	$ 103,367
Accounts receivable, net	843,384	823,418
Merchandise inventories	1,210,558	1,290,103
Other current assets	336,065	321,690
Total current assets	2,465,246	2,538,578
Property and equipment, net	386,135	386,723
Operating lease assets	197,200
Goodwill	413,235	414,122
Intangible assets, net	311,254	321,764
Due from O&M and subsidiaries	0	0
Advances to and investment in consolidated subsidiaries	0	0
Other assets, net	109,294	112,601
Total assets	3,882,364	3,773,788
Current liabilities
Accounts payable	990,688	1,109,589
Accrued payroll and related liabilities	40,999	48,203
Other current liabilities	377,989	314,219
Total current liabilities	1,409,676	1,472,011
Long-term debt, excluding current portion	1,685,135	1,650,582
Operating lease liabilities, excluding current portion	155,703
Due to O&M and subsidiaries	0	0
Intercompany debt	0	0
Deferred income taxes	42,144	50,852
Other liabilities	87,867	81,924
Total liabilities	3,380,525	3,255,369
Equity
Common stock	125,872	124,588
Paid-in capital	241,547	238,773
Retained earnings	186,455	200,670
Accumulated other comprehensive loss	(52,035)	(45,612)
Total equity	501,839	518,419	$ 1,018,918	$ 1,015,479
Total liabilities and equity	3,882,364	3,773,788
Eliminations
Current assets
Cash and cash equivalents	0	0
Accounts receivable, net	(643,386)	(463,895)
Merchandise inventories	(3,308)	(4,758)
Other current assets	0	(1,268)
Total current assets	(646,694)	(469,921)
Property and equipment, net	0	0
Operating lease assets	0
Goodwill	0	0
Intangible assets, net	0	0
Due from O&M and subsidiaries	(988,509)	(880,901)
Advances to and investment in consolidated subsidiaries	(1,777,976)	(1,790,469)
Other assets, net	0	0
Total assets	(3,413,179)	(3,141,291)
Current liabilities
Accounts payable	(654,113)	(475,358)
Accrued payroll and related liabilities	0	0
Other current liabilities	0	0
Total current liabilities	(654,113)	(475,358)
Long-term debt, excluding current portion	0	0
Operating lease liabilities, excluding current portion	0
Due to O&M and subsidiaries	(1,236,377)	(673,458)
Intercompany debt	(1,568,890)	(1,568,888)
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	(3,459,380)	(2,717,704)
Equity
Common stock	0	0
Paid-in capital	(298,479)	(758,483)
Retained earnings	291,643	281,859
Accumulated other comprehensive loss	53,037	53,037
Total equity	46,201	(423,587)
Total liabilities and equity	(3,413,179)	(3,141,291)
Owens & Minor, Inc.
Current assets
Cash and cash equivalents	5,971	37,254
Accounts receivable, net	0	0
Merchandise inventories	0	0
Other current assets	29	117
Total current assets	6,000	37,371
Property and equipment, net	0	0
Operating lease assets	2,768
Goodwill	0	0
Intangible assets, net	0	0
Due from O&M and subsidiaries	0	0
Advances to and investment in consolidated subsidiaries	1,689,812	1,697,191
Other assets, net	0	1,788
Total assets	1,698,580	1,736,350
Current liabilities
Accounts payable	0	0
Accrued payroll and related liabilities	0	0
Other current liabilities	5,488	9,641
Total current liabilities	5,488	9,641
Long-term debt, excluding current portion	626,771	595,856
Operating lease liabilities, excluding current portion	1,661
Due to O&M and subsidiaries	552,974	605,558
Intercompany debt	0	0
Deferred income taxes	0	0
Other liabilities	9,847	6,876
Total liabilities	1,196,741	1,217,931
Equity
Common stock	125,872	124,588
Paid-in capital	241,547	238,773
Retained earnings	186,455	200,670
Accumulated other comprehensive loss	(52,035)	(45,612)
Total equity	501,839	518,419
Total liabilities and equity	1,698,580	1,736,350
Guarantor Subsidiaries
Current assets
Cash and cash equivalents	43,611	5,294
Accounts receivable, net	887,822	804,638
Merchandise inventories	980,441	1,060,083
Other current assets	99,190	117,163
Total current assets	2,011,064	1,987,178
Property and equipment, net	197,088	201,055
Operating lease assets	128,775
Goodwill	413,235	414,122
Intangible assets, net	269,143	290,814
Due from O&M and subsidiaries	988,509	880,901
Advances to and investment in consolidated subsidiaries	88,164	93,278
Other assets, net	52,910	56,221
Total assets	4,148,888	3,923,569
Current liabilities
Accounts payable	1,233,448	1,190,283
Accrued payroll and related liabilities	20,714	23,071
Other current liabilities	222,202	161,371
Total current liabilities	1,476,364	1,374,725
Long-term debt, excluding current portion	1,044,342	1,040,664
Operating lease liabilities, excluding current portion	108,810
Due to O&M and subsidiaries	0	0
Intercompany debt	1,246,785	1,246,787
Deferred income taxes	16,829	29,288
Other liabilities	58,994	51,366
Total liabilities	3,952,124	3,742,830
Equity
Common stock	0	0
Paid-in capital	174,614	174,614
Retained earnings	53,802	37,777
Accumulated other comprehensive loss	(31,652)	(31,652)
Total equity	196,764	180,739
Total liabilities and equity	4,148,888	3,923,569
Non-guarantor Subsidiaries
Current assets
Cash and cash equivalents	25,657	60,819
Accounts receivable, net	598,948	482,675
Merchandise inventories	233,425	234,778
Other current assets	236,846	205,678
Total current assets	1,094,876	983,950
Property and equipment, net	189,047	185,668
Operating lease assets	65,657
Goodwill	0	0
Intangible assets, net	42,111	30,950
Due from O&M and subsidiaries	0	0
Advances to and investment in consolidated subsidiaries	0	0
Other assets, net	56,384	54,592
Total assets	1,448,075	1,255,160
Current liabilities
Accounts payable	411,353	394,664
Accrued payroll and related liabilities	20,285	25,132
Other current liabilities	150,299	143,207
Total current liabilities	581,937	563,003
Long-term debt, excluding current portion	14,022	14,062
Operating lease liabilities, excluding current portion	45,232
Due to O&M and subsidiaries	683,403	67,900
Intercompany debt	322,105	322,101
Deferred income taxes	25,315	21,564
Other liabilities	19,026	23,682
Total liabilities	1,691,040	1,012,312
Equity
Common stock	0	0
Paid-in capital	123,865	583,869
Retained earnings	(345,445)	(319,636)
Accumulated other comprehensive loss	(21,385)	(21,385)
Total equity	(242,965)	242,848
Total liabilities and equity	$ 1,448,075	$ 1,255,160