Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to our common shareholder	$ 35	$ 14
Net income attributable to noncontrolling interests	0	0
Net income	35	14
Other comprehensive income (loss):
Currency translation adjustment attributable to our common shareholder	26	(2)
Currency translation adjustment attributable to noncontrolling interests	1	(1)
Currency translation adjustment	27	(3)
Net change in fair value of effective portion of cash flow hedges attributable to our common shareholder	13	(46)
Net change in fair value of effective portion of cash flow hedges attributable to noncontrolling interests	0	0
Net change in fair value of effective portion of cash flow hedges	13	(46)
Net change in pension and other benefits attributable to our common shareholder	(13)	6
Net change in pension and other benefits attributable to noncontrolling interests	0	0
Net change in pension and other benefits	(13)	6
Other comprehensive income (loss) before income tax effect attributable to our common shareholder	26	(42)
Other comprehensive income (loss) before income tax effect attributable to noncontrolling interests	1	(1)
Other comprehensive income (loss) before income tax effect	27	(43)
Income tax (benefit) provision related to items of other comprehensive income (loss) attributable to our common shareholder	(5)	0
Income tax (benefit) provision related to items of other comprehensive income (loss) attributable to noncontrolling interests	0	0
Income tax (benefit) provision related to items of other comprehensive income (loss)	(5)	0
Other comprehensive income (loss), net of tax, attributable to our common shareholder	31	(42)
Other comprehensive income (loss), net of tax, attributable to noncontrolling interests	1	(1)
Other comprehensive income (loss), net of tax	32	(43)
Comprehensive income (loss) attributable to our common shareholder	66	(28)
Comprehensive income (loss) attributable to noncontrolling interest	1	(1)
Comprehensive income (loss)	$ 67	$ (29)