Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 719	$ 834
Accounts receivable and accrued revenues	774	663
Risk Management Assets, Net, Current	205
Income tax receivable	573	426
Total Current Assets	2,271	1,923
Natural gas & oil properties, based on full cost accounting
Proved properties	40,228	39,610
Unproved properties	4,480	5,198
Other	2,302	2,194
Property, plant and equipment	47,010	47,002
Less: Accumulated depreciation, depletion and amortization	(38,056)	(38,863)
Property, plant and equipment, net	8,954	8,139
Other Assets	144	138
Risk Management Assets, Net, Long-term	246	16
Deferred Income Taxes Assets	1,043	1,658
Goodwill	2,609	2,779
Total Assets	15,267	14,653
Current Liabilities
Accounts payable and accrued liabilities	1,415	1,303
Income tax payable	7	5
Risk Management Liabilities, Net, Current	236	254
Current portion of long-term debt	0
Total Current Liabilities	1,658	1,562
Long-Term Debt	4,197	4,198
Other Liabilities and Provisions	2,167	2,047
Risk Management Liabilities, Net, Long-term	13	35
Asset Retirement Obligation	470	654
Deferred Income Taxes	34	31
Total Liabilities	8,539	8,527
Commitments and Contingencies
Shareholders' Equity
Share capital - authorized unlimited common shares, without par value, 2017 issued and outstanding: 973.1 million shares (2016: 973.0 million shares)	4,757	4,756
Paid in surplus	1,358	1,358
Accumulated deficit	(429)	(1,198)
Accumulated other comprehensive income	1,042	1,210
Total Shareholders' Equity	6,728	6,126
Total Liabilities and Shareholders' Equity	$ 15,267	$ 14,653