Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	$ 1,948
Distribution of Herc Rentals Inc	(346)
Balance at the end of the period	1,573
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	(245)	$ (115)
Other comprehensive income (loss) before reclassification	23	(82)
Amounts reclassified from accumulated other comprehensive loss	4	7
Distribution of Herc Rentals Inc	115
Balance at the end of the period	(103)	(190)
Pension and Other Post-Employment Benefits
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	(102)	(101)
Other comprehensive income (loss) before reclassification	(20)	0
Amounts reclassified from accumulated other comprehensive loss	4	7
Distribution of Herc Rentals Inc	20
Balance at the end of the period	(98)	(94)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	(124)	5
Other comprehensive income (loss) before reclassification	32	(82)
Amounts reclassified from accumulated other comprehensive loss	0	0
Distribution of Herc Rentals Inc	95
Balance at the end of the period	3	(77)
Unrealized Losses on Terminated Net Investment Hedges
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	(19)	(19)
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Distribution of Herc Rentals Inc	0
Balance at the end of the period	(19)	(19)
Unrealized Gains on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss)[Roll Forward]
Balance at the beginning of the period	0	0
Other comprehensive income (loss) before reclassification	11	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Distribution of Herc Rentals Inc	0
Balance at the end of the period	$ 11	$ 0