CONSOLIDATED STATEMENTS OF INCOME UNAUDITED (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 6,417,615us-gaap_SalesRevenueNet	$ 6,013,398us-gaap_SalesRevenueNet	$ 5,878,464us-gaap_SalesRevenueNet
Cost of sales	4,999,071us-gaap_CostOfGoodsAndServicesSold	4,592,536us-gaap_CostOfGoodsAndServicesSold	4,483,042us-gaap_CostOfGoodsAndServicesSold
Gross profit	1,418,544us-gaap_GrossProfit	1,420,862us-gaap_GrossProfit	1,395,422us-gaap_GrossProfit
Selling, General and Administrative Expense	724,700	756,180	772,004
Provision for Doubtful Accounts	84,460us-gaap_ProvisionForDoubtfulAccounts	99,561us-gaap_ProvisionForDoubtfulAccounts	97,995us-gaap_ProvisionForDoubtfulAccounts
Settlement, litigation and other related charges	42,818ocr_LitigationAndOtherProfessionalFees	167,465ocr_LitigationAndOtherProfessionalFees	49,375ocr_LitigationAndOtherProfessionalFees
Other miscellaneous charges	139,253us-gaap_OtherCostAndExpenseOperating	99,802us-gaap_OtherCostAndExpenseOperating	65,713us-gaap_OtherCostAndExpenseOperating
Operating income	427,313us-gaap_OperatingIncomeLoss	297,854us-gaap_OperatingIncomeLoss	410,335us-gaap_OperatingIncomeLoss
Interest expense net of investment income	(129,947)us-gaap_InterestIncomeExpenseNet	(123,870)us-gaap_InterestIncomeExpenseNet	(135,103)us-gaap_InterestIncomeExpenseNet
Income from continuing operations before income taxes	297,366	173,984	275,232
Income tax expense	113,154us-gaap_IncomeTaxExpenseBenefit	89,092us-gaap_IncomeTaxExpenseBenefit	103,289us-gaap_IncomeTaxExpenseBenefit
Income from continuing operations	184,212	84,892	171,943
Loss from discontinued operations	(39,685)	(128,324)	22,931
Net income (loss)	144,527us-gaap_ProfitLoss	(43,432)us-gaap_ProfitLoss	194,874us-gaap_ProfitLoss
Earnings (loss) per common share - Basic:
Basic earnings per share, continuing operations (per share)	$ 1.89	$ 0.83	$ 1.57
Discontinued operations	$ (0.41)	$ (1.26)	$ 0.21
Net income	$ 1.48us-gaap_EarningsPerShareBasic	$ (0.43)us-gaap_EarningsPerShareBasic	$ 1.78us-gaap_EarningsPerShareBasic
Earnings (loss) per common share - Diluted:
Diluted earnings per share, continuing operations plus assumed conversions (per share)	$ 1.74	$ 0.78	$ 1.52
Diluted earnings per share, discontinued operations (per share)	$ (0.37)	$ (1.17)	$ 0.20
Net income	$ 1.36us-gaap_EarningsPerShareDiluted	$ (0.39)us-gaap_EarningsPerShareDiluted	$ 1.73us-gaap_EarningsPerShareDiluted
Weighted average number of common shares outstanding:
Common shares (in shares)	97,524	102,080	109,531
Diluted shares (in shares)	106,228	109,449	112,988
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative translation adjustment	0	0	1,384
Unrealized appreciation in fair value of investments	402us-gaap_UnrealizedGainLossOnInvestments	(274)us-gaap_UnrealizedGainLossOnInvestments	(151)us-gaap_UnrealizedGainLossOnInvestments
Amortization of pension benefit gain and actuarial loss	(686)	553	(1,363)
Total other comprehensive income (loss), net of tax	(284)	279	(130)
Comprehensive income (loss)	$ 144,243us-gaap_ComprehensiveIncomeNetOfTax	$ (43,153)us-gaap_ComprehensiveIncomeNetOfTax	$ 194,744us-gaap_ComprehensiveIncomeNetOfTax

Gain (loss) in Other Comprehensive Income; Amortization of Pension Benefit Gain and Actuarial Loss

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