Label	Element	Value
Shareholders' Equity [Member]
Cumulative effect on equity in period of adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 58,000,000
Cumulative effect on equity in period of adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(15,000,000)
Retained Earnings [Member]
Cumulative effect on equity in period of adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	68,000,000
Cumulative effect on equity in period of adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(15,000,000)
Accumulated Other Comprehensive Income [Member]
Cumulative effect on equity in period of adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (10,000,000)