Three Months Ended December 31,								Year Ended December 31,
		2017				2016				2017				2016
		(Unaudited)				(Unaudited)				(Unaudited)
Gross Operating Margin by Segment:
NGL Pipelines & Services		$	871.5			$	784.3			$	3,258.3			$	2,990.6
Crude Oil Pipelines & Services			295.5				220.9				987.2				854.6
Natural Gas Pipelines & Services			178.5				201.3				714.5				734.9
Petrochemical & Refined Products Services			172.0				148.7				714.6				650.6
Total segment gross operating margin(1)			1,517.5				1,355.2				5,674.6				5,230.7
Net adjustment for shipper make-up rights(2)			2.6				2.1				5.8				17.1
Non-GAAP total gross operating margin		$	1,520.1			$	1,357.3			$	5,680.4			$	5,247.8

 

(1)	Within the context of this table, total segment gross operating margin represents a subtotal and corresponds to measures similarly titled within the financial statement footnotes provided in our quarterly and annual filings with the United States Securities and Exchange Commission (“SEC”).

(2)

Gross operating margin by segment for NGL Pipelines & Services and Crude Oil Pipelines & Services reflects adjustments for non-refundable deferred transportation revenues relating to the make-up rights of committed shippers on certain major pipeline projects. These adjustments are included in managements’ evaluation of segment results. However, these adjustments are excluded from non-GAAP total gross operating margin in compliance with guidance from the SEC.

For the year ended December 31, 2017, our equity in income from unconsolidated affiliates was $426.0 million, distributions received from unconsolidated affiliates was approximately $483.0 million, interest expense (including related amortization) was approximately $984.6 million, provision for income taxes was $25.7 million and depreciation, amortization and accretion in costs and expenses was $1,644.0 million. In addition, during 2017, we made sustaining capital expenditures of $243.9 million, received $30.6 million in connection with the monetization of interest rate derivative instruments, and received proceeds from sales of assets of $40.1 million.

The foregoing information has not been audited or reviewed by our independent auditors and is subject to revision as we prepare our audited financial statements as of and for the year ended December 31, 2017. This information is not a comprehensive statement of our financial results for the year ended December 31, 2017, and our actual results may differ materially from these estimates as a result of the completion of our financial closing process, audit adjustments (if any) and other developments arising between now and the time that our financial results for the year ended December 31, 2017 are issued.

Highlights of Fourth Quarter 2017 Results. Net income attributable to limited partners for the fourth quarter of 2017 was $774.0 million compared to $658.8 million for the fourth quarter of 2016. Earnings per unit for the fourth quarter of 2017 was $0.36 per unit on a fully diluted basis compared to $0.31 per unit on a fully diluted basis for the fourth quarter of 2016. Net income for the fourth quarter of 2017 included non-cash asset impairment and related charges totaling $14.6 million or $0.01 per unit on a fully diluted basis, compared to $24.4 million, or $0.01 per unit on a fully diluted basis, for the fourth quarter of 2016.

Revenues for the fourth quarter of 2017 were $8.43 billion compared to $6.48 billion for the same quarter of 2016. The quarter-to-quarter increase in revenues is primarily due to higher commodity prices.

Our NGL, crude oil, refined products and petrochemical pipeline transportation volumes for the fourth quarter of 2017 were 6.0 million barrels per day, which were 14 percent more than volumes for the fourth quarter of 2016. Total natural gas pipeline transportation volumes were 12.9 trillion British thermal units per day (“TBtud”) for the