Financial Statements of HSBC USA Inc. (Parent) Balance Sheet (Details) - USD ($) $ in Millions		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Assets:
Interest bearing deposits with banks		$ 11,157		$ 20,238
Securities held-to-maturity (fair value of $3 million at both December 31, 2017 and 2016)		13,977		12,809
Investment in subsidiaries:
Other assets		7,129		6,755
Total assets		187,235	[1]	201,301	[1]	$ 188,278
Liabilities:
Interest, taxes and other liabilities		3,944		3,950
Short-term borrowings		4,650		5,101		4,995
Total liabilities	[1]	167,141		180,946
Total equity		20,094		20,355		$ 20,525
Total liabilities and equity		187,235		201,301
HSBC USA Inc [Member]
Assets:
Interest bearing deposits with banks		1		0
Securities held-to-maturity (fair value of $3 million at both December 31, 2017 and 2016)		2		3
Receivables and balances due from subsidiaries		14,536		17,356
Receivables from other HSBC affiliates		6,722		3,863
Investment in subsidiaries:
Banking		23,316		23,626
Other		1		3
Other assets		148		267
Total assets		44,726		45,118
Liabilities:
Interest, taxes and other liabilities		137		106
Payables due to subsidiaries		3		1
Payables due to other HSBC affiliates		22		27
Short-term borrowings		1,154		1,251
Long-term debt	[2]	22,474		22,542
Long-term debt due to subsidiary and other HSBC affiliates	[2]	842		836
Total liabilities		24,632		24,763
Total equity		20,094		20,355
Total liabilities and equity		$ 44,726		$ 45,118

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at December 31, 2017 and December 31, 2016 which are consolidated on our balance sheet. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 24, "Variable Interest Entities," for additional information. Assets: Other assets $154 million and $231 million. Total assets $154 million and $231 million respectively. Liabilities: Long-term debt $73 million and $79 million, Interest, taxes and other liabilities $59 million and $60 million. Total liabilities $132 million and $139 million, respectively.

[2] Contractual scheduled maturities for the debt over the next five years are as follows: 2018 –$7.1 billion; 2019 – $4.0 billion; 2020 – $5.8 billion; 2021 – $1.6 billion; 2022 – $1.7 billion; and thereafter – $3.1 billion.