XML 160 R12.htm IDEA: XBRL DOCUMENT

Business Acquisitions (Notes)	12 Months Ended
Business Acquisitions (Notes)	Dec. 31, 2019
Business Combinations [Abstract]
Business Acquisitions [Text Block]	Business Acquisitions The Company completed various acquisitions, which primarily related to residential real estate brokerage businesses and, in 2017, development and construction costs for a110-megawatt ("MW")solar project and a 50-MW solar project and the remaining 25% interest in a natural gas-fueled generation facility at Nevada Power, totaling $27 million in 2019, $106 million in 2018 and $1.1 billion in 2017. The purchase price for each acquisition was allocated to the assets acquired and liabilities assumed and the 2017 acquisitions resulted in acquired assets of $1.1 billion, assumed liabilities of $487 million and recognized goodwill of $508 million. The acquired assets, assumed liabilities and recognized goodwill for the 2019 and 2018 acquisitions were not material. Additionally, in April 2018, HomeServices acquired the remaining 33.3% interest in a real estate brokerage franchise business from the noncontrolling interest member at a contractually determined option exercise price totaling $131 million.