Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 271.6	$ (225.5)
Other comprehensive income (loss), before tax:
Unrealized gains (losses) on securities	1,110.1	(399.9)
Other-than-temporary impairments	15.6	10.9
Pension and other postretirement benefits liability	(3.4)	(3.5)
Other comprehensive income (loss), before tax	1,122.3	(392.5)
Income tax expense (benefit) related to items of other comprehensive income (loss)	393.9	(134.6)
Other comprehensive income (loss), after tax	728.4	(257.9)
Comprehensive income (loss)	1,000.0	(483.4)
Less: Comprehensive income (loss) attributable to the noncontrolling interest	13.5	(13.5)
Comprehensive income (loss) attributable to Voya Financial, Inc.'s common shareholders	$ 986.5	$ (469.9)