In the fourth quarter of 2020, we completed our plan to exit our Logistics business, which was a component of the Business Services reporting segment. The Logistics business was comprised of DLS Worldwide, International Logistics, Print Logistics and Courier Logistics. In November 2020, we sold our DLS Worldwide and International Logistics businesses as part of our strategic shift to exit non-core businesses in order to pursue portfolio optimization and to reduce debt. As part of this strategic shift, we previously sold Print Logistics in July 2018 and Courier Logistics in March 2020. During the nine months ended September 30, 2021, we finalized working capital adjustments and settled certain other contingencies related to the divested businesses, the impact of which is included in the Gain (loss) on sale of the discontinued operations, net of tax.

As part of the divestitures, we entered into transition services agreements with the buyers to assist them in the transition of certain functions, including, but not limited to, information technology, finance, and human resources. Further, we entered into several commercial agreements whereby we continue to receive logistics services from the divested business. Our involvement with the divested businesses is not material in the three or nine-month periods ended September 30, 2021.

We have reflected the Courier Logistics business, the DLS Worldwide business, and the International Logistics business, as discontinued operations for all periods presented in the Condensed Consolidated Statements of Operations.

Results of discontinued operations for the three and nine months ended September 30, 2020 were as follows:

	Three Months Ended			Nine Months Ended
	September 30,			September 30,
	2020			2020
Net sales	$	190.5		$	558.5
Cost of sales		(164.1	)		(484.1	)
Selling, general, administrative and other operating expenses		(21.3	)		(69.7	)
Restructuring, impairment and other expense		(0.2	)		(21.0	)
Operating income (loss) from discontinued operations		4.9			(16.3	)
Income tax expense		(4.5	)		(3.2	)
Net gain (loss) from discontinued operations	$	0.4		$	(19.5	)

Net sales includes sales from the Logistics businesses to RRD which were previously eliminated in consolidation and have been recast and are now shown as external sales within the financial results of discontinued operations above. These net sales were $11.0 million and $33.8 million for the three and nine months ended September 30, 2020, respectively.

Restructuring, impairment, and other expenses included $20.6 million of non-cash charges related to impairment of goodwill recorded in the nine months ended September 30, 2020.