Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Mortgage loans (includes $27,610 and $27,058, respectively, for the three months ended and $84,157 and $79,877, respectively, for the nine months ended related to consolidated trusts)	$ 28,858	$ 28,723	$ 88,005	$ 85,064
Long-term debt (includes $22,775 and $22,361, respectively, for the three months ended and $70,371 and $65,972, respectively, for the nine months ended related to consolidated trusts)	24,187	23,861	74,757	70,406
Consolidated Trusts [Member]
Mortgage loans (includes $27,610 and $27,058, respectively, for the three months ended and $84,157 and $79,877, respectively, for the nine months ended related to consolidated trusts)	27,610	27,058	84,157	79,877
Long-term debt (includes $22,775 and $22,361, respectively, for the three months ended and $70,371 and $65,972, respectively, for the nine months ended related to consolidated trusts)	$ 22,775	$ 22,361	$ 70,371	$ 65,972