Goodwill and Other Intangible Assets (Details) - Other Intangible Assets - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Other intangible assets by major asset class
Intangible assets subject to amortization, gross carrying amount	$ 295	$ 309
Intangible assets subject to amortization, accumulated amortization	233	229
Intangible assets subject to amortization, net	62	80
Intangible assets not subject to amortization	225	226
Total other intangible assets, gross carrying amount	520	535
Total other intangible assets, net	287	306
Customer-related [Member]
Other intangible assets by major asset class
Intangible assets subject to amortization, gross carrying amount	91	104
Intangible assets subject to amortization, accumulated amortization	43	41
Intangible assets subject to amortization, net	48	63
Contract-based [Member]
Other intangible assets by major asset class
Intangible assets subject to amortization, gross carrying amount	204	205
Intangible assets subject to amortization, accumulated amortization	190	188
Intangible assets subject to amortization, net	$ 14	$ 17