CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents		$ 33	$ 64	[1]
Accounts receivable and other (Note 20)		42	47	[1]
Inventories		8	7	[1],[2]
Other		7	7	[1],[2]
Total current assets		90	125	[1],[2]
Equity investments (Note 5)		1,213	918	[1]
Plant, property and equipment ,net ( Note 6)		2,123	2,180	[1]
Goodwill		130	130	[1]
Other assets		3	1	[1],[2]
Total assets		3,559	3,354	[1],[2]
Current Liabilities
Accounts payable and accrued liabilities		31	29	[1],[2]
Accounts payable to affiliates (Note 17)		5	8	[1],[2]
Accrued interest		12	10	[1],[2]
Distributions payable		1	3	[1],[2]
Current portion of long-term debt (Note 8)		51	52	[1]
Total current liabilities		100	102	[1],[2]
Long-term debt (Note 8)		2,352	1,859	[1]
Deferred state income taxes (Note 24)		10	10	[1],[2]
Other liabilities (Note 9)		29	28	[1]
Total liabilities		2,491	1,999	[1],[2]
Common units subject to rescission (Note 10)	[1],[2]		83
Partners' Equity (Note 10)
General partner		24	27	[1],[2]
Accumulated other comprehensive income (loss) (AOCI) (Note 11)		5	(2)	[1],[2]
Controlling interests		963	1,144	[1],[2]
Non-controlling interest		105	97	[1],[2]
Equity of former parent of PNGTS	[1],[2]		31
Total partners' equity	[3]	1,068	1,272
Total liabilities and partners' equity		3,559	3,354	[1],[2]
Common Units
Partners' Equity (Note 10)
Limited partner		824	1,002	[1],[2]
Class B Units
Partners' Equity (Note 10)
Limited partner		$ 110	$ 117	[1],[2]

[1] Recast to consolidate PNGTS (Refer to Notes 2 and 7).

[2] Recast to consolidate PNGTS (Refer to Notes 2 and 7).

[3] Recast to consolidate PNGTS (Refer to Notes 2 and 7).