Investment in Cenovus Energy	3 Months Ended
Mar. 31, 2020
Investment In Cenovus Energy [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 6-–Investment in Cenovus Energy On May 17, 2017, we completed the sale of our 50 percent nonoperated interest in the FCCL Partnership, as well as the majority of our western Canada gas assets, to Cenovus Energy. Consideration for the transaction included 208 million Cenovus Energy common shares, which, at closing, approximated 16.9 percent of issued and outstanding Cenovus Energy common stock. The fair value and cost basis of our investment in 208 million Cenovus Energy common shares was $ 1.96 billion based on a price of $ 9.41 per share on the NYSE on the closing date. At March 31, 2020, the investment included on our consolidated balance sheet was $ 420 million and is carried at fair value. The fair value of the 208 million Cenovus Energy common shares reflects the closing price of $ 2.02 per share on the NYSE on the last trading day of the quarter, a decrease of $ 1.69 billion from $ 2.11 billion at year-end 2019. The decrease in fair value represents the net unrealized loss recorded within the “Other income (loss)” line of our consolidated income statement in the first quarter of 2020 relating to the shares held at the reporting date. See Note 14—Fair Value Measurement, for additional information. Subject to market conditions, we intend to decrease our investment over time through market transactions, private agreements or otherwise.

Investment in Cenovus Energy

3 Months Ended

Mar. 31, 2020

Investment In Cenovus Energy [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note 6-–Investment in Cenovus Energy

On May 17, 2017, we completed the sale of our

percent nonoperated interest in the FCCL

Partnership, as

well as the majority of our western Canada gas

assets, to Cenovus Energy.

Consideration for the transaction

included

208

million Cenovus Energy common shares, which,

at closing, approximated

16.9

percent of issued

and outstanding Cenovus Energy common stock.

The fair value and cost basis of our investment

in 208

million Cenovus Energy common shares was $

1.96

billion based on a price of $

9.41

per share on the NYSE on

the closing date.

At March 31, 2020, the investment included

on our consolidated balance sheet was $

420

million and is carried

at fair value.

The fair value of the

208

million Cenovus Energy common shares reflects

the closing price of

2.02

per share on the NYSE on the last trading

day of the quarter, a decrease of $

1.69

billion from $

2.11

billion at year-end 2019.

The decrease in fair value represents the net unrealized

loss recorded within the

“Other income (loss)” line of our consolidated income

statement in the first quarter of 2020 relating

to the

shares held at the reporting date.

See Note 14—Fair Value Measurement, for additional information.

Subject

to market conditions, we intend to decrease our

investment over time through market transactions,

private

agreements or otherwise.