Loans and finance receivables (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Loans and finance receivables before allowances and discounts	$ 17,462	$ 16,622
Allowances for uncollectible loans	(183)	(177)
Unamortized acquisition discounts	(144)	(165)
Loans and finance receivables	$ 17,135	$ 16,280

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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No definition available.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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