Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 248	$ 147	$ 83	$ 85
Investment in subsidiaries	155	141
Other assets	492	272
Total other assets	7,852	5,949
Total assets	50,448	45,987
Total current assets	3,113	3,094
Liabilities and Equity
Dividends payable	212	195
Short-term debt	595	1,038
Other current liabilities	662	463
Total current liabilities	4,568	4,460
Other liabilities	186	206
Total deferred credits and other liabilities	15,234	13,502
Capitalization
Total common stockholders’ equity	13,239	12,222
Total liabilities and equity	50,448	45,987
Xcel Energy Inc.
Assets
Cash and cash equivalents	70	1	$ 1	$ 0
Accounts receivable from subsidiaries	370	309
Other current assets	12	1
Investment in subsidiaries	17,443	15,965
Other assets	60	44
Total other assets	17,503	16,009
Total assets	17,955	16,320
Total current assets	452	311
Liabilities and Equity
Dividends payable	212	195
Short-term debt	500	488
Other current liabilities	33	10
Total current liabilities	745	693
Other liabilities	23	32
Total deferred credits and other liabilities	23	32
Capitalization
Long-term debt, noncurrent	3,948	3,373
Total common stockholders’ equity	13,239	12,222
Total capitalization	17,187	15,595
Total liabilities and equity	$ 17,955	$ 16,320